CA2064918A1 - Compositions having a physiological cooling effect and active compounds suitable for these compositions - Google Patents
Compositions having a physiological cooling effect and active compounds suitable for these compositionsInfo
- Publication number
- CA2064918A1 CA2064918A1 CA002064918A CA2064918A CA2064918A1 CA 2064918 A1 CA2064918 A1 CA 2064918A1 CA 002064918 A CA002064918 A CA 002064918A CA 2064918 A CA2064918 A CA 2064918A CA 2064918 A1 CA2064918 A1 CA 2064918A1
- Authority
- CA
- Canada
- Prior art keywords
- ketal
- compositions
- cooling effect
- alkylene radical
- composition according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D319/00—Heterocyclic compounds containing six-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D319/04—1,3-Dioxanes; Hydrogenated 1,3-dioxanes
- C07D319/08—1,3-Dioxanes; Hydrogenated 1,3-dioxanes condensed with carbocyclic rings or ring systems
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L27/00—Spices; Flavouring agents or condiments; Artificial sweetening agents; Table salts; Dietetic salt substitutes; Preparation or treatment thereof
- A23L27/20—Synthetic spices, flavouring agents or condiments
- A23L27/205—Heterocyclic compounds
- A23L27/2052—Heterocyclic compounds having oxygen or sulfur as the only hetero atoms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
- A61K8/4973—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with oxygen as the only hetero atom
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
- A61K8/4973—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with oxygen as the only hetero atom
- A61K8/498—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with oxygen as the only hetero atom having 6-membered rings or their condensed derivatives, e.g. coumarin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/02—Stomatological preparations, e.g. drugs for caries, aphtae, periodontitis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q11/00—Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D317/00—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D317/08—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
- C07D317/10—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings
- C07D317/14—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D317/18—Radicals substituted by singly bound oxygen or sulfur atoms
- C07D317/20—Free hydroxyl or mercaptan
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D317/00—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D317/08—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
- C07D317/72—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 spiro-condensed with carbocyclic rings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
- A61K2800/24—Thermal properties
- A61K2800/244—Endothermic; Cooling; Cooling sensation
Abstract
Compositions having a physiological cooling effect, and active compounds suitable for these compositions A b s t r a c t Ketals, preferably glycerol ketals such as, for example, l-menthone glycerol ketal or 3,3,5-trimethylcyclohexanone glycerol ketal, have a physiological cooling effect and are therefore suitable as active compounds in composi-tions which are intended to cause a sensation of freshness on human skin or mucous membrane.
HR 123-Foreign countries
HR 123-Foreign countries
Description
3~
The invention relates to compositions which do not have an interfering odour and taste ,and which cauqe a physio-logical cooling effect when ap]plied to the skin or the mucous membranes. It seems that the effect which conveys to the person concerned a sensation of freshness can be attributed to stimulation of th~s corresponding receptors of the human nervous system. I'he invention furthermore relates to new compounds which are capable of causing thi~ effect.
The best known natural compound which ha~ a physiological cooling effect is, without doubt, ~ menthol, which is a component of peppexmint oil (e~ Mentha arvensis~. It is employed, for example, for manufacturing dentifrices, mouth washes, foodstuffs, beverages and cosmetics.
However, the typical strong peppermint flavour and ~he bitter and stinging taste are frequently found unpleasant.
There has therefore been no lack of attemp~s to find substances which have the positive cooling effect without the abovementioned shortcomings of menthol. For example, German Offenlegungsschrift 2,202,535 proposes p-menthane-3-carboxamide and esters of p-menthane-3-carboxylic acid, German Offenlegung~schrift 2,205,255 propo~es N-substituted p-menthane-3-carboxamides, German Offen-legungsschrift 2,317,538 pxoposes alipha~ic amides, German Offenlegungs~chrift 2,334,985 proposes cyclic and HR 123-Forei~n countries - 1 -.: ' ~ ` ' . ' `~ ''' ` ' ' acyclic sulphoxides and ~ulphones, and German Offen-legungssch~ift 2,345,156 proposes aliphatic substituted phosphine oxide~. However, these compounds do not occur naturally and are also not degraded by the h~man organism to give substances which occur in nature. Cons equently the use of these substances in foodstuffs can be considered as being questionable.
Menthol derivatives have also been investigated; however, they do not completely meet lhc set requirements. For example, 1-menthylethyl car})onate, which has been proposed in German Offenlegungsschrift 2,022,364, smells of oranges, menthyl N-acetylglycinate, which has been proposed in German Offenlegungsschrift 2,433,165, and the menthol esters of heterocyclic carboxylic acids, which have been proposed in German Offenlegungsschrift 2,339,661, are bitter, and some of the menthyl keto esters which hav~ been pr~posed in US Patent Specification 3,830,930 are bitter over a prolonged period and their cooling effect is only poor.
German Offenlegungsschrift 2,608,226 discloses menthol esters of naturally occurring C2-C6-hydroxycarboxylic acids (which, in turn, may be es~erified on the hydroxyl group with Cl-C4-carboxylic acids), which are odourless and flavourless and have a prolonged cooling effect.
l-Menthyl lactate, in particular, has proven itself in practice. Howsver, the product is not stable to alkalis, so ~hat it is not suitabla for all types of application (for exa~ple soaps~.
HR_123-Foreiqn countrie~ - 2 -' :. ' ' '`': .. ~. :::
' ;, . ' . . :. ~ ' :
, :: . '.
The invention relates to compositions which do not have an interfering odour and taste ,and which cauqe a physio-logical cooling effect when ap]plied to the skin or the mucous membranes. It seems that the effect which conveys to the person concerned a sensation of freshness can be attributed to stimulation of th~s corresponding receptors of the human nervous system. I'he invention furthermore relates to new compounds which are capable of causing thi~ effect.
The best known natural compound which ha~ a physiological cooling effect is, without doubt, ~ menthol, which is a component of peppexmint oil (e~ Mentha arvensis~. It is employed, for example, for manufacturing dentifrices, mouth washes, foodstuffs, beverages and cosmetics.
However, the typical strong peppermint flavour and ~he bitter and stinging taste are frequently found unpleasant.
There has therefore been no lack of attemp~s to find substances which have the positive cooling effect without the abovementioned shortcomings of menthol. For example, German Offenlegungsschrift 2,202,535 proposes p-menthane-3-carboxamide and esters of p-menthane-3-carboxylic acid, German Offenlegung~schrift 2,205,255 propo~es N-substituted p-menthane-3-carboxamides, German Offen-legungsschrift 2,317,538 pxoposes alipha~ic amides, German Offenlegungs~chrift 2,334,985 proposes cyclic and HR 123-Forei~n countries - 1 -.: ' ~ ` ' . ' `~ ''' ` ' ' acyclic sulphoxides and ~ulphones, and German Offen-legungssch~ift 2,345,156 proposes aliphatic substituted phosphine oxide~. However, these compounds do not occur naturally and are also not degraded by the h~man organism to give substances which occur in nature. Cons equently the use of these substances in foodstuffs can be considered as being questionable.
Menthol derivatives have also been investigated; however, they do not completely meet lhc set requirements. For example, 1-menthylethyl car})onate, which has been proposed in German Offenlegungsschrift 2,022,364, smells of oranges, menthyl N-acetylglycinate, which has been proposed in German Offenlegungsschrift 2,433,165, and the menthol esters of heterocyclic carboxylic acids, which have been proposed in German Offenlegungsschrift 2,339,661, are bitter, and some of the menthyl keto esters which hav~ been pr~posed in US Patent Specification 3,830,930 are bitter over a prolonged period and their cooling effect is only poor.
German Offenlegungsschrift 2,608,226 discloses menthol esters of naturally occurring C2-C6-hydroxycarboxylic acids (which, in turn, may be es~erified on the hydroxyl group with Cl-C4-carboxylic acids), which are odourless and flavourless and have a prolonged cooling effect.
l-Menthyl lactate, in particular, has proven itself in practice. Howsver, the product is not stable to alkalis, so ~hat it is not suitabla for all types of application (for exa~ple soaps~.
HR_123-Foreiqn countrie~ - 2 -' :. ' ' '`': .. ~. :::
' ;, . ' . . :. ~ ' :
, :: . '.
3~
Other products too are already being employed in practice, for example 3-1-menthoxypropane-1,2-diol (European Patent Specification 80,148) and N-ethyl~p-menthane~3~carboxamide (German Offenlegungsschrift 2,205,255 and 2,413,63g). ~owever, there wa~ a demand for compositions with an increased cooling effect or a better price/performance ratio.
Surprisingly, it has now been found that selected ketals have the desired advantageous combination of desirable properties.
The invention relates to compositions which ha~e a physiological cooling effect and which contain at least one ketal of the formula R3 ~o R1 (X) in which Rl represents a C2-C~-alkylene radical having at least 1, but not more than 3, hydroxyl group(s~, prefer~bly 1 hydro~yl group, and either R2 and R3 independently of one another represent Cl-C1O-alkyl which is optionally subs~
tuted by 1 to 3 radicals selected ~rom the ~roup comprising hydroxyl, amino and halogen (such as fluorine, chlorine, HR 123-Foreiqn countries - 3 - . . ~. i : :
:
z~
bromine or iodine), C5 C7-cycloalkyl, preferably cyclohexyl, C6-Cl2-axyl, preferably phenyl, with the proviso that the total o~ the C
atoms of R2 and R3 is not less than 3, or R2 and R3 together represent an alkylene radical which, together with the carbon atom which carries the radicals R2 and R3, forms a 5-7-membered ring, it being possible for this alkylene radical, in turn, to be substituted ~y Cl-C6-alkyl groups.
.
Preferred radicals R2 and R3 comprise methyl, isopropyl and tert.-butyl.
The length of the radic ls R2 and R3 influences the effect of the compounds I: shorter radicals lead to an immediate, hort effect; longer radicals lead to a ~ -delayed, but prolonged effect. An important aspect for the cosme~ics inidustry is the solubility of tha compounds in water; this is the case, in particular, with short ~radicals R2 and R3. ;~
Pre~erred radicals R1 embrace 1,2- and 1,3-alkylene radicals which, together with $he two oxygen atoms and HR 123-Foreian countrie~ - 4 -, ' , ` ' ,' ' : '' ~ . ' ' :' `
~?~ 8 with the carbon atom to which the two oxygen atoms are attached, form a dioxolane or dioxane ring.
Preferred compounds I in wh.ich R2 and R3 together represent an alkylene radical are those of the form~la R12 R13 R14 ~?15 ~ Rlo ~ ~ Rl (Ia) [ R9~R4 in which R4 to Rl5independently of one another denote hydrogen or Cl-C~-alkyl, preferably hydrogen or Cl-C4-alkyl, and , m and n independently of one another denote zero or 1.
Preferred compounds of the formula Ia are those in which the total of m + n is 1, i.e. ketals of an optionally substituted cyclohexanone.
Preferred sub~tituents, of which here may be present, in HR 123-Foreiqp countries - 5 -. . ~ , .
"; ~
,: :
'......... . - .
, :~
, ' 9~
particular, 1 to 3, axe methyl, isopropyl and tert.-butyl.
The ket~ls I are eith~r knowT~, or they have no~ been known to date and can be prepared by analogous, known processes. For example, ketal I will generally be prepared by acid-catalysed reaction of the ketone on which ketal I is based and not less than the e~uivalent amount of aliphatic C3-C6-alcohol having not less than 3 and not more than 5, preferably 3, hydroxyl groups. In general, ~he ketone on which ketal I is based and not les~ than 0.5 mol equivalents, but, as a rule, a 1.2- to 4-fold, preferably 1.5- to 3-fold excess of this amount of ~he C3-C6-alcohol having 3 to 5 hydroxyl groups will be employed. Examples of acid catalysts which can be u~ed are p-toluenesulphonic acid, phosphoric acid or potassium hydrogen sulphate in catalytically effective amounts (for example 0.1 to 3 g of p-toluenesulphonic acid per mole of ketone)~ The reaction will preferably be carried out either in an organic solvent which together with water forms an a~eotrope, so that the water, which is liberated during the formation of the ketal, can be elLminated by azeotropic entrainment, or water-consuming corea~ents such as, for example, trialkyl ortho esters are used.
Examples of prefarred organic solvents comprise benzene, toluene, xylene, chloroform, methylene chloride and trichloroethylene. The reaction can be regarded as comple~e when water no longer ~eparates out or wh~n an ester/alcohol mixture is no longer separated out. It is recommended to wash the pxoducts subsequently with dilute HR 123-Forei n countries - 6 -,~
,, ~ , ~ . , 20-l~lhR-lY92 14: 0g 13f~ R hG LE~JERKUSE~`J -~'19 21~ 3034EIZ S. 02 alkali ~ncl ~ ith wat~ co ~ ?a~at~ and dx~ th~ orS~anic ph~Ye, to ~t~ip of ~ th~ Y~lv~nt:, ~nd, if ~p~op~iate, t,o 5 purlfy t}~e r~ ue~ fc)~ ~xa~pl~ ~ d~ ation~
Particul~rly p~erxed k~ I ar~ ~ho~e o~ t~ onnula~a I
~o~
t~I~ tI~I~
$~)~ 1 ~S~O~R 1 ~Iv) ~v~
~ .
tYI
2s in which ~I h~s th~ a~oveinentioned ~ea~ing a~d pref~rab1y stands ~or CH2jC~ 2- ~- 4f` ~C~ 2- . JKetals ~roln ~Iycerol ~ ~OEI C~C~20~ ~3 ~zC)~
30 ~nd i~s hosnol~gues a~ p~icularly pre~red.
The inventio1l also ~dates to the ~e~ls ~II to VI.
3-~rç~b~ 7 , : , -713~ R-1992 14~ 3h`l'ER h~i l E~IER~';U~EN +49 214 3034~32 5,03 The k~3t~1~ I tc~ b~ ~mployo~ in th~ com~o~it~o~ ~c~ordi~ç
~o ~h~ in~rention c~n h~v~ ric C ~to~s ~ optlcal i m can ~h~ro~or~ oc~S~ h~pendin~ on th* ~tar~in~
mat~ri~l ~nd ~h~ b~re~a~a~ion m~thod8 ufied, ~h~ar can ~xls:t ln th~ ~orr~ o f, ~aixl:~u~ o~ t~e op~ al i~om~r~ o~ ~.n th~
fo~m o~ pu~6~ L~iom~r~. ~rhe cooling ~ff~c:t o tl ~ lsiom~
may cli~ert so tha~ on~ oJ: the o~ch~ er m~Sr be pre~e~r~d .
13esidf~ th~ X{3tals I, th0 cc)~aposi~ion~ ~c¢oxcllng 'co thæ
~nvention may conta~ n ~ carri~rs ancUor dilu6an~ . Th~
na~-ure o~ t~ dc~p~3nd~ on the int~ 3d u~ o~ 'ch~
compo~i'CiOSl -"'h~ omposi~ions acc~ din~ ~o tll6~ in~ontion C~A~ be u~
for all purpuse~ wher~ a phy~iological coolin~ ~f ~ect i~
d~si~ed. ~xample~ o~ product~ in ~hich ~uch cc~ol~nt. a~e f~equ~ ly usl~d are lllxu~y itern~ ~3uc:h ~3 ch~,ring S~ura, c~ewin~ toba,c~:o, cigaxet~es, ~e~r~rages, ic~ cx~am, conect~ ,nary, ~;ltS u3ed in the r~anufacture o~ wa~ s, ph~rma~euti~al ~?:repara~ions, body cax~ product~ or cos-me~ic pxepa~s.tions~ such as den~riXic~, mouth wash~esr preparations ~or ~rg~in~, p~r~:~n~, powdexs, ~c~tions, ointme~t~, oili~, c~ , shavin5~ fo~, ~f1;e3:sha~
~harnpoo~ e~c.
The rea~y to ~se prod~ts contaln the ketals I in dn ~mo~lnt which is suffic7en1; for provoking ~h~ six~d Pi~nsation o~ :
cold. ~ a rulet 0.01 ~o 3, pre~e~ra.bly 0.05 ~o 1, per ... _ . . ......
., , ,, , :.
.. ..
, .
~, , . . .
oen~ ~ weight ar~ u~od r~l~tiv~ to the ~ hl: o~ t~
r~a~y t~ uj~ ~r~luCt (~,~. toothpaste~ mouthwash).
Thla ~x~;>le~ which ;~ollow illu~ratia th~ inv~3htiono llnl~ o~herwi~e indicat~d, ~rc:*ntag~ e ~ nt by S w~ai~h~.
~a~
~s ~-~n-ths; n~ glyc:erol, Icet:~l ( kr~own ~xom S~i~ihchuk, A.~.; M~hn~Ykii, 1~7.~, Mi3cryuko~a, N.~Ch. Uk~ Rh~ h. (RUS8. ~d.
~,3~2), 1~3-6, 1~77 C~ 87(5); 3g6~7U~
Tn a 2 1 three-ns~Ck~d ~iask th~3xe ~r~ introduo~cl 3û8 ~ of nc~one t ~ mol J, ;~ or glycerol ~ 3 sQol ) ~nd ~ g of potas~ hydroc~n ~ul~hate in tol~en~. Thi~ mixtur~2 i8 ro~ x~c~ in a ~at~ ~epa~ator. A~2r 7 hour~, 42 ~ Of a~hO,~ p~ O,L~. T~ UlJCl;U~ eu~ ec~ an~
distillad.
A~ ~0~106~CJl mbar, 441 g o~ a colc~urless, cl~j~r liquid A f e~ f ~ S oi~m~t~ ph~ ~ lo ~h~t t;l ~ ~u ~
~s ovex 9~ Accor~in~ to the ~ s~ctr~m, the r~ul~cin~
20compo-~nc~ cantains a 3, 3-dioxolan~3 rin~.
n20 ~ 4~: a~ 14 . 1~; d~!5~ 1 .038t~.
~_9C~ _ g _ ~t3-5 ZOP~ Z Gt:~l r;~~,rl~ 5t~ ~Q,l,t~ l 05~ ZGG~ ~t,~W t3Z
, , .
:
. ~
~" ' ' ~' ' '', ~ ' ~ . ' ' 2~ 3~ 8 ~ 3, 3, S-~rim~th.yl~y~loh~xallon~ yaerol k~t~l A 2ni~t~ o~ 140 9 o1 3, 3 " S~ loh-~anon~
ol ), 184 S~ o~ ~lycerol ( 2 ms~l ) and ~ q o . p-tolueno sulphonic ~ in ~oluQn~ reat~d ~ in Ex~mpl6~ 1~
A~ J;C'C;~1-5 m~ Z3!3 5~ O~ OlC:)Urle~ a~ id distll over. Ga~ c~owato~Aphy ~ ra~ th~t the ~urit~
is ~v~3~ 999~ .
n~ a 1.4699; d(25~C) = 1.0~6~ m.~ 20~C~
3-~th~ 2-bu~anon~ ~lys:eJcol ke~al A n~ixtur~a o~ &g4 ~ 3-mQthyl-2-but~nonai~ (5~75 mol) S~9 g o:~ glyoe~ol ( 5 . 75 mol ~ and 4 g o~ p-tolu~ ul-phonic acid i8 introduced in~o a :r~action Vd3~i5ei and 670 y o trimetl~yl orthoforma~ ~ S ~ 32 ~1) ~ e ~ub~-quentl$t ~d~d drop~ise. During thi~ prc~c:e~s, ~h~3 tç~mperatur~ of the reac:tio~ mixtur~ risos to alpprox.
~5~-50C. ~rhe r~asllltin~ met~hanol/ma~hyl l~orm~te mixture L~ L~ u~ sprserl~ p~e~sur~: ~o a hotrc~m temp~ratu~e o~ C. It i~ th~n ~ool~d ~o 50C, a vacuu~
i~ appl~i3d ~1DW1Y/ ~nd th~ mixture i~ ~u~je::ted to Y, ~ ~L ,.~llaS~.t ~ lyl~ v ~uul~l . ~ull~ ;i g;
nD = 1.4~13~; d~5~C~ ~ 1.0294.
50'5 Zab0 b~Z 6b+ ~135~ 13031 ~ ~3,~ 1 6S:b~ Z661~ 0Z
2~
~a~ chrom~to~ra~hy r~veal~; ~h~t ~e purity 1~ 97, S~ .
Th~ pr~c~ was al50 U~ ro~ pr~p~rin~ ~he ~411Os~-in~ compoundl~:
, ~2 ~ 20 d(~5~3 W~i~h~
the 2q~1n ~r~cti~n 1 0 ~
4 ~ ~utyl ~3thyl 1 . 4 4 2 5 0 . 9 9 g 5 74 8 t~Butyl ~e~hyl 1,44R6 1.0160 B21 6 E:thyl Ethyl 1.4447 1.~330 667 7 i-Prop~ Pxopyl 1.455~ 1.0167 830 9 ~h3,rl :M~th$~ 341 1,0655 667 FJXamplCt8 3-8 ~ te ~o su~s~anc~3s ~ith l::ooling ei~ t;
~ ow~19 ~ ou~ ~ac~ L ,v~ y t~
~xasnple l-~enthone l.l.1-~imethylol~thane ketal (~ 7-I~opropyl-3.lO d~nethyl-l.S-dioxa-~ ]Un~CaTI-3~meUl~nOl) 2s l-Menthone ar~d 1.1.1~trimethylolethan~ we~e ~ac~d in analo~y so Example 1, A
cololl~le~8 hi~h-vi~c~ i1 hs~v;n~ th~. follcl~in$ r)rnperLi~ w~ ht~ A
l~.p,: 134~C: (1 m~ i n 20: 1 4g33; ~ 27.3.
~}nple 11:
I-Menth~l-e I.I.I-trim~.rhylolpr~p~e ke~l (~ hyl 7-i~oprop~ ~mothyl-1.5 dioxa~piro[S.5]undecan-3-nlcth~nol) 35 I-Menthone and 1.1.1-srime~lylolpropane wer~ reacle;i in analogy to Ex~mple l. A
Iourlss~ high-~ ou4 oil h~vin~ o follc~wi~l~s pr~ps:r~i~S WZIS C~ ilU;~;
b.p.: 148C (I mb~r~; n D: 1 .4850; ~x 24s -25). 1.
90 S ZSI70 blZ 6b+ 113-.rl:~kl31l31 ~W ~13~ [ 00:Sr Z661~ W-0Z
:
~.
.~.'. ' : . ~, .
'~ 9~8 ~m~4 I~ cnsh~ 2.4-butAn~,u~ X~ yl~ yl-1.4-~liu~splr decan-~eth~n~lJ
l-Menthon~ d l.~.~bulanet~iol were reacte~i in analogy lo Ex~nple l.
~o ~o ~6 '~
~ ~n~
~ C~ ~J~ IU~~ J Ll~ ~OCI~ U~ DC
. - . . ; , ~ .
, , . , / " . . . , , ~
~ . .
.,
Other products too are already being employed in practice, for example 3-1-menthoxypropane-1,2-diol (European Patent Specification 80,148) and N-ethyl~p-menthane~3~carboxamide (German Offenlegungsschrift 2,205,255 and 2,413,63g). ~owever, there wa~ a demand for compositions with an increased cooling effect or a better price/performance ratio.
Surprisingly, it has now been found that selected ketals have the desired advantageous combination of desirable properties.
The invention relates to compositions which ha~e a physiological cooling effect and which contain at least one ketal of the formula R3 ~o R1 (X) in which Rl represents a C2-C~-alkylene radical having at least 1, but not more than 3, hydroxyl group(s~, prefer~bly 1 hydro~yl group, and either R2 and R3 independently of one another represent Cl-C1O-alkyl which is optionally subs~
tuted by 1 to 3 radicals selected ~rom the ~roup comprising hydroxyl, amino and halogen (such as fluorine, chlorine, HR 123-Foreiqn countries - 3 - . . ~. i : :
:
z~
bromine or iodine), C5 C7-cycloalkyl, preferably cyclohexyl, C6-Cl2-axyl, preferably phenyl, with the proviso that the total o~ the C
atoms of R2 and R3 is not less than 3, or R2 and R3 together represent an alkylene radical which, together with the carbon atom which carries the radicals R2 and R3, forms a 5-7-membered ring, it being possible for this alkylene radical, in turn, to be substituted ~y Cl-C6-alkyl groups.
.
Preferred radicals R2 and R3 comprise methyl, isopropyl and tert.-butyl.
The length of the radic ls R2 and R3 influences the effect of the compounds I: shorter radicals lead to an immediate, hort effect; longer radicals lead to a ~ -delayed, but prolonged effect. An important aspect for the cosme~ics inidustry is the solubility of tha compounds in water; this is the case, in particular, with short ~radicals R2 and R3. ;~
Pre~erred radicals R1 embrace 1,2- and 1,3-alkylene radicals which, together with $he two oxygen atoms and HR 123-Foreian countrie~ - 4 -, ' , ` ' ,' ' : '' ~ . ' ' :' `
~?~ 8 with the carbon atom to which the two oxygen atoms are attached, form a dioxolane or dioxane ring.
Preferred compounds I in wh.ich R2 and R3 together represent an alkylene radical are those of the form~la R12 R13 R14 ~?15 ~ Rlo ~ ~ Rl (Ia) [ R9~R4 in which R4 to Rl5independently of one another denote hydrogen or Cl-C~-alkyl, preferably hydrogen or Cl-C4-alkyl, and , m and n independently of one another denote zero or 1.
Preferred compounds of the formula Ia are those in which the total of m + n is 1, i.e. ketals of an optionally substituted cyclohexanone.
Preferred sub~tituents, of which here may be present, in HR 123-Foreiqp countries - 5 -. . ~ , .
"; ~
,: :
'......... . - .
, :~
, ' 9~
particular, 1 to 3, axe methyl, isopropyl and tert.-butyl.
The ket~ls I are eith~r knowT~, or they have no~ been known to date and can be prepared by analogous, known processes. For example, ketal I will generally be prepared by acid-catalysed reaction of the ketone on which ketal I is based and not less than the e~uivalent amount of aliphatic C3-C6-alcohol having not less than 3 and not more than 5, preferably 3, hydroxyl groups. In general, ~he ketone on which ketal I is based and not les~ than 0.5 mol equivalents, but, as a rule, a 1.2- to 4-fold, preferably 1.5- to 3-fold excess of this amount of ~he C3-C6-alcohol having 3 to 5 hydroxyl groups will be employed. Examples of acid catalysts which can be u~ed are p-toluenesulphonic acid, phosphoric acid or potassium hydrogen sulphate in catalytically effective amounts (for example 0.1 to 3 g of p-toluenesulphonic acid per mole of ketone)~ The reaction will preferably be carried out either in an organic solvent which together with water forms an a~eotrope, so that the water, which is liberated during the formation of the ketal, can be elLminated by azeotropic entrainment, or water-consuming corea~ents such as, for example, trialkyl ortho esters are used.
Examples of prefarred organic solvents comprise benzene, toluene, xylene, chloroform, methylene chloride and trichloroethylene. The reaction can be regarded as comple~e when water no longer ~eparates out or wh~n an ester/alcohol mixture is no longer separated out. It is recommended to wash the pxoducts subsequently with dilute HR 123-Forei n countries - 6 -,~
,, ~ , ~ . , 20-l~lhR-lY92 14: 0g 13f~ R hG LE~JERKUSE~`J -~'19 21~ 3034EIZ S. 02 alkali ~ncl ~ ith wat~ co ~ ?a~at~ and dx~ th~ orS~anic ph~Ye, to ~t~ip of ~ th~ Y~lv~nt:, ~nd, if ~p~op~iate, t,o 5 purlfy t}~e r~ ue~ fc)~ ~xa~pl~ ~ d~ ation~
Particul~rly p~erxed k~ I ar~ ~ho~e o~ t~ onnula~a I
~o~
t~I~ tI~I~
$~)~ 1 ~S~O~R 1 ~Iv) ~v~
~ .
tYI
2s in which ~I h~s th~ a~oveinentioned ~ea~ing a~d pref~rab1y stands ~or CH2jC~ 2- ~- 4f` ~C~ 2- . JKetals ~roln ~Iycerol ~ ~OEI C~C~20~ ~3 ~zC)~
30 ~nd i~s hosnol~gues a~ p~icularly pre~red.
The inventio1l also ~dates to the ~e~ls ~II to VI.
3-~rç~b~ 7 , : , -713~ R-1992 14~ 3h`l'ER h~i l E~IER~';U~EN +49 214 3034~32 5,03 The k~3t~1~ I tc~ b~ ~mployo~ in th~ com~o~it~o~ ~c~ordi~ç
~o ~h~ in~rention c~n h~v~ ric C ~to~s ~ optlcal i m can ~h~ro~or~ oc~S~ h~pendin~ on th* ~tar~in~
mat~ri~l ~nd ~h~ b~re~a~a~ion m~thod8 ufied, ~h~ar can ~xls:t ln th~ ~orr~ o f, ~aixl:~u~ o~ t~e op~ al i~om~r~ o~ ~.n th~
fo~m o~ pu~6~ L~iom~r~. ~rhe cooling ~ff~c:t o tl ~ lsiom~
may cli~ert so tha~ on~ oJ: the o~ch~ er m~Sr be pre~e~r~d .
13esidf~ th~ X{3tals I, th0 cc)~aposi~ion~ ~c¢oxcllng 'co thæ
~nvention may conta~ n ~ carri~rs ancUor dilu6an~ . Th~
na~-ure o~ t~ dc~p~3nd~ on the int~ 3d u~ o~ 'ch~
compo~i'CiOSl -"'h~ omposi~ions acc~ din~ ~o tll6~ in~ontion C~A~ be u~
for all purpuse~ wher~ a phy~iological coolin~ ~f ~ect i~
d~si~ed. ~xample~ o~ product~ in ~hich ~uch cc~ol~nt. a~e f~equ~ ly usl~d are lllxu~y itern~ ~3uc:h ~3 ch~,ring S~ura, c~ewin~ toba,c~:o, cigaxet~es, ~e~r~rages, ic~ cx~am, conect~ ,nary, ~;ltS u3ed in the r~anufacture o~ wa~ s, ph~rma~euti~al ~?:repara~ions, body cax~ product~ or cos-me~ic pxepa~s.tions~ such as den~riXic~, mouth wash~esr preparations ~or ~rg~in~, p~r~:~n~, powdexs, ~c~tions, ointme~t~, oili~, c~ , shavin5~ fo~, ~f1;e3:sha~
~harnpoo~ e~c.
The rea~y to ~se prod~ts contaln the ketals I in dn ~mo~lnt which is suffic7en1; for provoking ~h~ six~d Pi~nsation o~ :
cold. ~ a rulet 0.01 ~o 3, pre~e~ra.bly 0.05 ~o 1, per ... _ . . ......
., , ,, , :.
.. ..
, .
~, , . . .
oen~ ~ weight ar~ u~od r~l~tiv~ to the ~ hl: o~ t~
r~a~y t~ uj~ ~r~luCt (~,~. toothpaste~ mouthwash).
Thla ~x~;>le~ which ;~ollow illu~ratia th~ inv~3htiono llnl~ o~herwi~e indicat~d, ~rc:*ntag~ e ~ nt by S w~ai~h~.
~a~
~s ~-~n-ths; n~ glyc:erol, Icet:~l ( kr~own ~xom S~i~ihchuk, A.~.; M~hn~Ykii, 1~7.~, Mi3cryuko~a, N.~Ch. Uk~ Rh~ h. (RUS8. ~d.
~,3~2), 1~3-6, 1~77 C~ 87(5); 3g6~7U~
Tn a 2 1 three-ns~Ck~d ~iask th~3xe ~r~ introduo~cl 3û8 ~ of nc~one t ~ mol J, ;~ or glycerol ~ 3 sQol ) ~nd ~ g of potas~ hydroc~n ~ul~hate in tol~en~. Thi~ mixtur~2 i8 ro~ x~c~ in a ~at~ ~epa~ator. A~2r 7 hour~, 42 ~ Of a~hO,~ p~ O,L~. T~ UlJCl;U~ eu~ ec~ an~
distillad.
A~ ~0~106~CJl mbar, 441 g o~ a colc~urless, cl~j~r liquid A f e~ f ~ S oi~m~t~ ph~ ~ lo ~h~t t;l ~ ~u ~
~s ovex 9~ Accor~in~ to the ~ s~ctr~m, the r~ul~cin~
20compo-~nc~ cantains a 3, 3-dioxolan~3 rin~.
n20 ~ 4~: a~ 14 . 1~; d~!5~ 1 .038t~.
~_9C~ _ g _ ~t3-5 ZOP~ Z Gt:~l r;~~,rl~ 5t~ ~Q,l,t~ l 05~ ZGG~ ~t,~W t3Z
, , .
:
. ~
~" ' ' ~' ' '', ~ ' ~ . ' ' 2~ 3~ 8 ~ 3, 3, S-~rim~th.yl~y~loh~xallon~ yaerol k~t~l A 2ni~t~ o~ 140 9 o1 3, 3 " S~ loh-~anon~
ol ), 184 S~ o~ ~lycerol ( 2 ms~l ) and ~ q o . p-tolueno sulphonic ~ in ~oluQn~ reat~d ~ in Ex~mpl6~ 1~
A~ J;C'C;~1-5 m~ Z3!3 5~ O~ OlC:)Urle~ a~ id distll over. Ga~ c~owato~Aphy ~ ra~ th~t the ~urit~
is ~v~3~ 999~ .
n~ a 1.4699; d(25~C) = 1.0~6~ m.~ 20~C~
3-~th~ 2-bu~anon~ ~lys:eJcol ke~al A n~ixtur~a o~ &g4 ~ 3-mQthyl-2-but~nonai~ (5~75 mol) S~9 g o:~ glyoe~ol ( 5 . 75 mol ~ and 4 g o~ p-tolu~ ul-phonic acid i8 introduced in~o a :r~action Vd3~i5ei and 670 y o trimetl~yl orthoforma~ ~ S ~ 32 ~1) ~ e ~ub~-quentl$t ~d~d drop~ise. During thi~ prc~c:e~s, ~h~3 tç~mperatur~ of the reac:tio~ mixtur~ risos to alpprox.
~5~-50C. ~rhe r~asllltin~ met~hanol/ma~hyl l~orm~te mixture L~ L~ u~ sprserl~ p~e~sur~: ~o a hotrc~m temp~ratu~e o~ C. It i~ th~n ~ool~d ~o 50C, a vacuu~
i~ appl~i3d ~1DW1Y/ ~nd th~ mixture i~ ~u~je::ted to Y, ~ ~L ,.~llaS~.t ~ lyl~ v ~uul~l . ~ull~ ;i g;
nD = 1.4~13~; d~5~C~ ~ 1.0294.
50'5 Zab0 b~Z 6b+ ~135~ 13031 ~ ~3,~ 1 6S:b~ Z661~ 0Z
2~
~a~ chrom~to~ra~hy r~veal~; ~h~t ~e purity 1~ 97, S~ .
Th~ pr~c~ was al50 U~ ro~ pr~p~rin~ ~he ~411Os~-in~ compoundl~:
, ~2 ~ 20 d(~5~3 W~i~h~
the 2q~1n ~r~cti~n 1 0 ~
4 ~ ~utyl ~3thyl 1 . 4 4 2 5 0 . 9 9 g 5 74 8 t~Butyl ~e~hyl 1,44R6 1.0160 B21 6 E:thyl Ethyl 1.4447 1.~330 667 7 i-Prop~ Pxopyl 1.455~ 1.0167 830 9 ~h3,rl :M~th$~ 341 1,0655 667 FJXamplCt8 3-8 ~ te ~o su~s~anc~3s ~ith l::ooling ei~ t;
~ ow~19 ~ ou~ ~ac~ L ,v~ y t~
~xasnple l-~enthone l.l.1-~imethylol~thane ketal (~ 7-I~opropyl-3.lO d~nethyl-l.S-dioxa-~ ]Un~CaTI-3~meUl~nOl) 2s l-Menthone ar~d 1.1.1~trimethylolethan~ we~e ~ac~d in analo~y so Example 1, A
cololl~le~8 hi~h-vi~c~ i1 hs~v;n~ th~. follcl~in$ r)rnperLi~ w~ ht~ A
l~.p,: 134~C: (1 m~ i n 20: 1 4g33; ~ 27.3.
~}nple 11:
I-Menth~l-e I.I.I-trim~.rhylolpr~p~e ke~l (~ hyl 7-i~oprop~ ~mothyl-1.5 dioxa~piro[S.5]undecan-3-nlcth~nol) 35 I-Menthone and 1.1.1-srime~lylolpropane wer~ reacle;i in analogy to Ex~mple l. A
Iourlss~ high-~ ou4 oil h~vin~ o follc~wi~l~s pr~ps:r~i~S WZIS C~ ilU;~;
b.p.: 148C (I mb~r~; n D: 1 .4850; ~x 24s -25). 1.
90 S ZSI70 blZ 6b+ 113-.rl:~kl31l31 ~W ~13~ [ 00:Sr Z661~ W-0Z
:
~.
.~.'. ' : . ~, .
'~ 9~8 ~m~4 I~ cnsh~ 2.4-butAn~,u~ X~ yl~ yl-1.4-~liu~splr decan-~eth~n~lJ
l-Menthon~ d l.~.~bulanet~iol were reacte~i in analogy lo Ex~nple l.
~o ~o ~6 '~
~ ~n~
~ C~ ~J~ IU~~ J Ll~ ~OCI~ U~ DC
. - . . ; , ~ .
, , . , / " . . . , , ~
~ . .
.,
Claims (8)
1. Composition which have a physiological cooling effect and which contain at least one ketal of the formula (I) in which R1 represents a C2-C8-alkylene radical having at least 1, but not more than 3, hydroxyl group(s), and either R2 and R3 independently of one another represent C1-C10-alkyl which is optionally substituted by 1 to 3 radicals selected from the group comprising hydroxyl, amino and halogen, or C5-C7-cycloalkyl, or C6-C12-aryl, with the proviso that the total of the C
atoms of R2 and R3 is not less than 3, or R2 and R3 together represent an alkylene radical which, together with the carbon atom which carries the radicals R2 and R3, forms a 5-7-membered ring, it being possible for this alkylene radical, in turn, to be substituted by C1-C?-alkyl groups.
HR 123-Foreign countries -13-
atoms of R2 and R3 is not less than 3, or R2 and R3 together represent an alkylene radical which, together with the carbon atom which carries the radicals R2 and R3, forms a 5-7-membered ring, it being possible for this alkylene radical, in turn, to be substituted by C1-C?-alkyl groups.
HR 123-Foreign countries -13-
2. Composition according to Claim 1, where R1 denotes a 1,2- or 1,3-alkylene radical.
3. Composition according to Claim 1, where R1 denotes , or .
4. Composition according to Claim 1, where the ketal is one of the formula (Ia) in which R4 to R15 independently of one another denote hydrogen or C1-C8-alkyl and m and n independently of one another denote zero or 1.
5. Composition according to Claim 4, where the total of m+n is 1.
HR 123-Foreign Countries -14-
HR 123-Foreign Countries -14-
6. Compounds of the formulae (III) (IV) (V) (VI) where R1 is as defined in Claim 1.
7. Compound selected from the group consisting of 3.3.5-trimethylcyclohex?
none glycerol ketal, 1-menthone 1.1.1-trimethylolethane ketal, 1-menthone 1.1.1-trimethylolpropane ketal, and 1-menthone 1.2.4-butanetriol ketal.
none glycerol ketal, 1-menthone 1.1.1-trimethylolethane ketal, 1-menthone 1.1.1-trimethylolpropane ketal, and 1-menthone 1.2.4-butanetriol ketal.
8. Use of compounds of the formula (I) according to Claim 1 for achieving a cooling effect on human skin or mucous membrane.
HR 123-Foreign countries -15-
HR 123-Foreign countries -15-
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4110973A DE4110973A1 (en) | 1991-04-05 | 1991-04-05 | MEDIUM WITH A PHYSIOLOGICAL COOLING EFFECT AND EFFECTIVE COMPOUNDS SUITABLE FOR THIS MEDIUM |
DEP4110973.2 | 1991-04-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA2064918A1 true CA2064918A1 (en) | 1992-10-06 |
Family
ID=6428853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002064918A Abandoned CA2064918A1 (en) | 1991-04-05 | 1992-04-02 | Compositions having a physiological cooling effect and active compounds suitable for these compositions |
Country Status (10)
Country | Link |
---|---|
US (1) | US5266592A (en) |
EP (1) | EP0507190B1 (en) |
JP (1) | JP3071030B2 (en) |
AT (1) | ATE123936T1 (en) |
AU (1) | AU653999B2 (en) |
CA (1) | CA2064918A1 (en) |
DE (2) | DE4110973A1 (en) |
DK (1) | DK0507190T3 (en) |
ES (1) | ES2073205T3 (en) |
IE (1) | IE67879B1 (en) |
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-
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- 1991-04-05 DE DE4110973A patent/DE4110973A1/en not_active Withdrawn
-
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- 1992-03-24 DE DE59202585T patent/DE59202585D1/en not_active Expired - Lifetime
- 1992-03-24 ES ES92105041T patent/ES2073205T3/en not_active Expired - Lifetime
- 1992-03-24 DK DK92105041.5T patent/DK0507190T3/en active
- 1992-03-24 AT AT92105041T patent/ATE123936T1/en not_active IP Right Cessation
- 1992-03-24 EP EP92105041A patent/EP0507190B1/en not_active Expired - Lifetime
- 1992-03-30 JP JP4103526A patent/JP3071030B2/en not_active Expired - Lifetime
- 1992-03-30 AU AU13909/92A patent/AU653999B2/en not_active Expired
- 1992-04-02 CA CA002064918A patent/CA2064918A1/en not_active Abandoned
- 1992-04-03 US US07/862,851 patent/US5266592A/en not_active Expired - Lifetime
- 1992-04-03 IE IE921084A patent/IE67879B1/en not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6303817B1 (en) | 2000-08-10 | 2001-10-16 | International Flavors & Fragrances Inc. | Method for making amides |
US6437183B1 (en) | 2000-08-10 | 2002-08-20 | International Flavors & Fragrances Inc. | Method for making amides |
US7025997B2 (en) | 2003-09-24 | 2006-04-11 | International Flavors & Fragrances Inc. | Coolant plant extract compositions containing monomenthyl succinate |
Also Published As
Publication number | Publication date |
---|---|
JPH05125073A (en) | 1993-05-21 |
DE59202585D1 (en) | 1995-07-27 |
US5266592A (en) | 1993-11-30 |
IE921084A1 (en) | 1992-10-07 |
DK0507190T3 (en) | 1995-10-09 |
EP0507190B1 (en) | 1995-06-21 |
AU653999B2 (en) | 1994-10-20 |
JP3071030B2 (en) | 2000-07-31 |
EP0507190A1 (en) | 1992-10-07 |
AU1390992A (en) | 1992-10-08 |
ATE123936T1 (en) | 1995-07-15 |
ES2073205T3 (en) | 1995-08-01 |
IE67879B1 (en) | 1996-05-01 |
DE4110973A1 (en) | 1992-10-08 |
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