EP1613611A1 - Novel sesquiterpene oxides as perfuming and flavouring agents - Google Patents
Novel sesquiterpene oxides as perfuming and flavouring agentsInfo
- Publication number
- EP1613611A1 EP1613611A1 EP03816443A EP03816443A EP1613611A1 EP 1613611 A1 EP1613611 A1 EP 1613611A1 EP 03816443 A EP03816443 A EP 03816443A EP 03816443 A EP03816443 A EP 03816443A EP 1613611 A1 EP1613611 A1 EP 1613611A1
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- EP
- European Patent Office
- Prior art keywords
- compound
- mixture
- acid
- products
- formula
- 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.)
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- the present inventions deals with a novel sesquiterpene oxide 3S, 3aR, 7aR, -6 isopropyl-- 1,1,3,3 a - tetramethyl l,3,3a,4,7,7a- hexahydro-isobenzofuran, of formula (I) and its process for preparation having odoriferous character.
- mixture of diastereoisomers of compound, of formula (1) in the ratio of 75:25 possesses multiodorant being a combination of rubarb, laurel, thyme and florex.
- a Japanese patent JP 54084551 by Nagakura et al, published on 5 th July, 1979 describes the use in perfumery, for cosmetics and flavor for food, of substances, specifically of an oily and multi-component oxidation product obtained by treating a mixture, consisting of alpha elemene and delta elemene, resulting from heat dehydration of beta elemol or an alpha elemene mixture separated from the dehydration product, with a peracid.
- a main objective of the present invention provides a novel sesquiterpene oxide 3S, 3aR, 7aR, -6 isopropyl- 1,1,3,3a - tetramethyl l,3,3a,4,7,7a- hexahydro-isobenzofuran, of formula (I) and its process for preparation.
- An object of the present invention provides compound of formula (1) having perfuming and flavoring property.
- Still another object of the present invention is to provide a mixture of stereoisomers of compund of formula (1) having multuioderant being the combination of rhubarb, laurel, thyme and florex.
- Still yet another object of the present invention provides the use of a compound of formula (1) alone or in combination with other perfuming ingredients, solvents, or additives to obtain desired olfactory effect.
- Yet another object of the present invention provides an incorporation of different proportions of compound of formula (1) into various products depending upon the nature of the products used and to obtain desired olfactory effect.
- the present invention describes the process for the preparation of novel sesquiterpene oxide 3S, 3aR, 7aR, -6 isopropyl- 1,1,3,3a - tetramethyl l,3,3a,4,7,7a- hexahydro-isobenzofuran, of formula (I) by the reaction of elemol with per acid at a temperature range of 20 to 30°C.
- the invention also deals with the use of compound of formula (1) as a perfuming and flavouring agent.
- FORMULA 1 represents basic structure of novel sesquiterpene oxides
- SCHEME-1 represents formation of elemene alcohols 2 & 3, probable products expected from reaction of elemenes, as per the reaction conditions given in JP 54084551.
- the present invention provides a compound named 3S, 3aR, 7aR-6-iso ⁇ ropyl-l,l,3,3a-tetramethyl-l,3,3,9,4,7,7a-hexahydroisobenzofuran of formula (1).
- An embodiment of the present invention provides a compound having following characteristics: Light yellow oil, [ ⁇ ] D -57.2 ( EtOH)
- Still another embodiment of the present invention provides a compound having isobenzofuran ring responsible for olfactory characteristics.
- Yet another embodiment of the present invention provides a compound used in fine perfumery, colognes, hygiene products, batch gels, hair care products, deodorants, air- freshener and cosmetic preparation.
- Another embodiment of the present invention provides a compound as a single or as a mixture of isomers that can be used to impart fragrance to consumer products.
- Still another embodiment of the present invention provides a process for the preparation of compound (1), the said process comprising steps of: a) dissolving elemol in glacial acetic acid to obtain a solution, b) adding perchloric acid to the step (a) solution at a temperature range of 20 to 30° C to obtain a reaction mixture, c) stirring the reaction mixture of step (b) at an ambient temperature for a period of 60 h to 80h, d) diluting with water the reaction mixture of step (d) extracting with the aqueous solution an organic solvent, separating the organic and the aqueous layer, e) washing the organic layer of step (d) with aqueous sodium bicarbonate followed by water, f) drying the washed organic layer over anhydrous sodium sulphate, filtering, and removing the solvent from the filtrate to obtain crude product, and g) pur
- step (b) provides a process, wherein in step (b), the peracid used is selected from a group consisting of peracetic acid, perchloric acid or perbenzoic acid.
- step (d) provides a process, wherein in step (d) the organic solvent used is selected from diethylether, methylene, chloride, chloroform or ethylacetate.
- Still another embodiment of the present invention provides a process, wherein in step (g) the mixture of organic solvent used is ethylacetate petroleum ether (4:96).
- Yet another embodiment of the present invention provides a process having isobenzofuran ring responsible for olfactory characteristics.
- Still another embodiment of the present invention provides a process wherein the compound is used in fine perfumery, colognes, hygeine products, batch gels, hair care products, deodorants, air freshness or cosmetic preparation.
- This compound can be used as an additive and when used in the applications, the products accepted to the users and it has not shown any adverse effect.
- Yet another embodiment of the present invention provides a synergistic composition containing an effective amount of compound (I) or mixture of its isomers, the said composition being useful in perfuming the soaps, shower or bath gels, hygiene products, hair care products such as shampoos, body deodorants, air fresheners or cosmetic preparation.
- This compound can be used as an additive and when used in the applications, the
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- Cosmetics (AREA)
- Fats And Perfumes (AREA)
Abstract
The present invention describes the process for the preparation of novel sesquiterpene oxide 3S, 3aR, 7aR, -6 isopropyl- 1,1,3,3a - tetramethyl 1,3,3a,4,7,7a- hexahydro-isobenzofuran, of formula (I) by the reaction of elemol with per acid at a temperature range of 20 to 30°C. The invention also deals with the use of compound of formula (1) as a perfuming and flavouring agent.
Description
NOVEL SESQUITERPENE OXIDES AS PERFUMING AND FLAVORING
AGENTS
Filed of the invention
The present inventions deals with a novel sesquiterpene oxide 3S, 3aR, 7aR, -6 isopropyl-- 1,1,3,3 a - tetramethyl l,3,3a,4,7,7a- hexahydro-isobenzofuran, of formula (I) and its process for preparation having odoriferous character. In addition, mixture of diastereoisomers of compound, of formula (1) in the ratio of 75:25 possesses multiodorant being a combination of rubarb, laurel, thyme and florex. Background of Prior Art The compounds as defined in formula 1, have been detected, among other reaction products, during the course of studies on peracid dehydration of the sesquiterpene elemol.
A Japanese patent JP 54084551 by Nagakura et al, published on 5th July, 1979 describes the use in perfumery, for cosmetics and flavor for food, of substances, specifically of an oily and multi-component oxidation product obtained by treating a mixture, consisting of alpha elemene and delta elemene, resulting from heat dehydration of beta elemol or an alpha elemene mixture separated from the dehydration product, with a peracid.
It is important to point out that this document of prior art neither specifies structure nor stereochemistry of any component of the mixture except giving the infrared and NMR spectra of the mixture. Without doubt, on the basis of the experimental conditions described in the abstract of the document, for the preparation of mixtures of diastereomers of elemenes oxides derived each from alpha and delta elemenes one may, theoretically expect the sesquiterpene alcohols, 2 and 3 as shown in the scheme-I.
Compound of formula (1) is neither prepared synthetically nor isolated from a natural product and reported the prior art. Its use as a perfuming or flavoring ingredient is also not known in the prior art.
During the synthesis of a reference compound, dehydration of elemol was carried out. The pleasant smelling novel sesquiterpene oxides, compounds of the present invention, were obtained as side products during the reaction. Object of the invention
A main objective of the present invention provides a novel sesquiterpene oxide 3S, 3aR, 7aR, -6 isopropyl- 1,1,3,3a - tetramethyl l,3,3a,4,7,7a- hexahydro-isobenzofuran, of formula (I) and its process for preparation.
An object of the present invention provides compound of formula (1) having perfuming and flavoring property.
Still another object of the present invention is to provide a mixture of stereoisomers of compund of formula (1) having multuioderant being the combination of rhubarb, laurel, thyme and florex.
Yet another object of the present invention is to provide stereo isomers of compound of formula (1) having pronounced differences in their odoriferous properties. Still another object of the present invention is to utilise the compound of formula (1) in fine perfumery, colognes, hygiene products, hair care products, body deodorants, air fresheners and cosmetic preparations.
Still yet another object of the present invention, provides the use of a compound of formula (1) alone or in combination with other perfuming ingredients, solvents, or additives to obtain desired olfactory effect.
Yet another object of the present invention provides an incorporation of different proportions of compound of formula (1) into various products depending upon the nature of the products used and to obtain desired olfactory effect. Summary of the invention
Accordingly, the present invention describes the process for the preparation of novel sesquiterpene oxide 3S, 3aR, 7aR, -6 isopropyl- 1,1,3,3a - tetramethyl l,3,3a,4,7,7a- hexahydro-isobenzofuran, of formula (I) by the reaction of elemol with per acid at a temperature range of 20 to 30°C. The invention also deals with the use of compound of formula (1) as a perfuming and flavouring agent. BRIEF DESCRIPTION OF THE DRAWINGS: FORMULA 1 represents basic structure of novel sesquiterpene oxides SCHEME-1 represents formation of elemene alcohols 2 & 3, probable products expected from reaction of elemenes, as per the reaction conditions given in JP 54084551. DETAILED DESCRIPTION OF THE INVENTION
In accordance to the objects, the present invention provides a compound named 3S, 3aR, 7aR-6-isoρropyl-l,l,3,3a-tetramethyl-l,3,3,9,4,7,7a-hexahydroisobenzofuran of formula (1).
An embodiment of the present invention provides a compound having following characteristics: Light yellow oil, [ α ]D -57.2 ( EtOH)
Infrared: 2964, 1377,1184, 950, 808, 777 cm-1
1H NMR (CDC13): δ 5.36 (lH,d,J= 6.12 Hz ); 3.55 (lH,q,J=7.2 Hz); 2.26 (lH,m ); 1.24 (3H,s); 1.16 ( 3H,s );0.77 ( 3H,s ); 1.03 (6H,d, J=7.92 Hz); 1.13 (3H, d, J=7.2 Hz);1.9,1.72,1.89,1.75. 13C NMR: 78.7; 81.2; 42.7; 37.7; 117.0; 143.4; 23.9; 54.3; 14.4; 12.6; 24.8; 30.6;
35.2; 21.4; 21.9 ppm.
MS: 222 (14), 207 (30), 178 (14), 163 (32), 149 (10), 135 (75), 93 (100), 79(18) Still another embodiment of the present invention provides a compound having isobenzofuran ring responsible for olfactory characteristics. Yet another embodiment of the present invention provides a compound used in fine perfumery, colognes, hygiene products, batch gels, hair care products, deodorants, air- freshener and cosmetic preparation.
Another embodiment of the present invention provides a compound as a single or as a mixture of isomers that can be used to impart fragrance to consumer products. Still another embodiment of the present invention provides a process for the preparation of compound (1), the said process comprising steps of: a) dissolving elemol in glacial acetic acid to obtain a solution, b) adding perchloric acid to the step (a) solution at a temperature range of 20 to 30° C to obtain a reaction mixture, c) stirring the reaction mixture of step (b) at an ambient temperature for a period of 60 h to 80h,
d) diluting with water the reaction mixture of step (d) extracting with the aqueous solution an organic solvent, separating the organic and the aqueous layer, e) washing the organic layer of step (d) with aqueous sodium bicarbonate followed by water, f) drying the washed organic layer over anhydrous sodium sulphate, filtering, and removing the solvent from the filtrate to obtain crude product, and g) purifying the crude product of step (f) over silica gel column eluting with a mixture of organic solvent to obtain the compound of formula (1).
Still another embodiment of the present invention provides a process, wherein in step (b), the peracid used is selected from a group consisting of peracetic acid, perchloric acid or perbenzoic acid.
Yet another embodiment of the present invention provides a process, wherein in step (d) the organic solvent used is selected from diethylether, methylene, chloride, chloroform or ethylacetate.
Still another embodiment of the present invention provides a process, wherein in step (g) the mixture of organic solvent used is ethylacetate petroleum ether (4:96).
Yet another embodiment of the present invention provides a process having isobenzofuran ring responsible for olfactory characteristics.
Still another embodiment of the present invention provides a process wherein the compound is used in fine perfumery, colognes, hygeine products, batch gels, hair care products, deodorants, air freshness or cosmetic preparation. This compound can be used as an additive and when used in the applications, the products accepted to the users and it has not shown any adverse effect.
Yet another embodiment of the present invention provides a synergistic composition containing an effective amount of compound (I) or mixture of its isomers, the said composition being useful in perfuming the soaps, shower or bath gels, hygiene products, hair care products such as shampoos, body deodorants, air fresheners or cosmetic preparation.
Still another embodiment of the present invention provides a composition that can be used alone or in combination with other perfuming agents, solvents or additives.
Yet another embodiment of the present invention provides a composition, wherein the mixture of isomers of compound (I) in the ratio 75:25 is a multiodorant being a combination of rhubarb, laurel, thyme and florex.
The invention is illustrated with references to the examples, which should not be 5 construed to limit the scope of the present invention.
EXAMPLE 1
Preparation of the compounds of formula 1:
To a solution of elemol (3.5-gm) in glacial acetic acid (42 ml) was added perchloric acid (0.7 ml, 60%). The reaction mixture was allowed to stand at room 10 temperature (25-27° C) for 72 hours with continuous stining, The reaction product was diluted with water and extracted with ether. The ethereal extract washed with sodium bicarbonate, then with water and dried over anhydrous sodium sulfate. Removal of the solvent gave a crude product containing, besides elemenes (major product of the reaction) all the stereoisomers of sesquiterpene oxide. The preferred compound is a major 15 component of the stereoisomeric mixture.
EXAMPLE 2
Purification of the preferred compound, 3S, 3aR, 7aR -6 isopropyl- 1,1, 3, 3 a- tetramethyl l,3,3a,4,7,7a, hexahydro isobenzofuran:
The crude product was flash column chromatographed over silica gel with ethyl 20 acetate in petroleum ether (4:96) to yield the preferred compound. Rf of the compound in the same solvent system as the eluent is 0.6.Yield: 0.28 g.
Analytical data:
Llight yellow oil, [α]D-57.2 ( EtOH)
Infrared: 2964, 1377,1184, 950, 808, 777 cm-1 25 1H NMR (CDC13): δ 5.36 (lH,d,J= 6.12 Hz ); 3.55 (lH,q,J=7.2 Hz); 2.26 (lH,m ); 1.24
(3H,s); 1.16 ( 3H,s );0.77 ( 3H,s ); 1.03 (6H,d, J=7.92 Hz); 1.13 (3H, d, J=7.2
Hz);1.9,1.72,1.89,1.75.
13C NMR: 78.7; 81.2; 42.7; 37.7; 117.0; 143.4; 23.9; 54.3; 14.4; 12.6; 24.8; 30.6; 35.2;
21.4; 21.9 ppm. 30 MS: 222 (14), 207 (30), 178 (14), 163 (32), 149 (10), 135 (75), 93 (100), 79(18)
ADVANTAGES OF THE PRESENT INVENTION
1. The molecule is novel with the novel application
2. It is multi-odorant with the tonalities of rhubarb, laurel, thyme and florex.
3. This compound can be used as an additive and when used in the applications, the
"3^ TvrnrlπH-c arrpwrprl tn tVip π<!f»r<! and it has nnt shn n anv adverse effect
Claims
1. A compound 3S, 3aR, 7aR-6-isopropyl-l,l,3,3a-tetramethyl-l,3,3,9,4,7,7a- hexahydroisobenzofuran of formula (1).
2. A compound of claim 1 has following characteristics:
Llight yellow oil, [ α ]D-57.2 ( EtOH)
Infrared: 2964, 1377,1184, 950, 808, 777 cm
1H NMR (CDC13): δ 5.36 (lH,d,J= 6.12 Hz ); 3.55 (lH,q,J=7.2 Hz); 2.26 (lH,m ); 1.24 (3H,s); 1.16 ( 3H,s );0.77 ( 3H,s ); 1.03 (6H,d, J=7.92 Hz); 1.13 (3H, d, J=7.2 Hz);1.9,1.72,1.89,1.75.
13C NMR: 78.7; 81.2; 42.7; 37.7; 117.0; 143.4; 23.9; 54.3; 14.4; 12.6; 24.8; 30.6; 35.2; 21.4; 21.9 ppm.
MS: 222 (14), 207 (30), 178 (14), 163 (32), 149 (10), 135 (75), 93 (100), 79(18)
3. A compound of claim 1 has isobenzofuran ring responsible for olfactory characteristics.
4. A compound of claim 1 is used in fine perfumery, colognes, hygiene products, batch gels, hair care products, deodorants, air freshener or cosmetic preparation.
5. A compound of claim 1 as single or as a mixture of isomers can be used to impart fragrance to consumer products.
6. A process for the preparation of compound (1) of claim 1, the said process comprising steps of: a) dissolving elemol in glacial acetic acid to obtain a solution, b) adding perchlorid acid to the step (a) solution at a temperature in the range of 20 to 30° C to obtain a reaction mixture, c) stirring the reaction mixture of step (b) at an ambient temperature for a period of 60 h to 80h, d) diluting with water the reaction mixture of step (d) extracting with the aqueous solution an organic solvent, separating the organic and the aqueous layer, e) washing the organic layer of step (d) with aqueous sodium bicarbonate followed by water, f) drying the washed organic layer over anhydrous sodium sulphate, filtering, and removing the solvent from the filtrate to obtain crude product, and g) purifying the crude product of step (f) over silica gel column eluting with a mixture of organic solvent to obtain the compound of formula ( 1 ).
7. A process of claim 6, wherein in step (b) the per acid used is selected from a group consisting of peracetic acid perchloric acid or perbenzoic acid.
8. A process of claim 6, wherein in step (d) the organic solvent used, is selected from diethylether, methylene, chloride, chloroform or ethylacetate.
9. A process of claim 6, wherein in step (g) the mixture of organic solvent used, is ethylacetate petroleum ether (4:96),
10. A process of claim 6, wherein in step (g) the compound obtained, has isobenzofuran ring responsible for olfactory characteristics. 11. A process of claim 6 wherein the compound obtained is used in fine perfumery, colognes, hygiene products, batch gels, hair care products, deodorants, air freshness or cosmetic preparation.
12. A synergistic composition containing an effective amount of compound (I) or mixture of its isomers, the said composition is useful in perfuming the soaps, shower or bath gels, hygiene products, hair care products such as shampoos, body deodorants, air fresheners or cosmetic preparation.
13. A composition of claim 12 can be used alone or in combination with other perfuming agents, solvents or additives.
4. A composition of claim 8, wherein the mixture of isomers of compound (I) in the ratio 75:25 is multiodorant being a combination of rhubarb, laurel, thyme and florex.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IN2003/000083 WO2004085417A1 (en) | 2003-03-26 | 2003-03-26 | Novel sesquiterpene oxides as perfuming and flavouring agents |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1613611A1 true EP1613611A1 (en) | 2006-01-11 |
Family
ID=34385756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03816443A Withdrawn EP1613611A1 (en) | 2003-03-26 | 2003-03-26 | Novel sesquiterpene oxides as perfuming and flavouring agents |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1613611A1 (en) |
| JP (1) | JP4551225B2 (en) |
| AU (1) | AU2003226618A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3109309B1 (en) * | 2012-01-18 | 2022-06-08 | The Procter & Gamble Company | Perfume systems |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5484551A (en) * | 1977-12-19 | 1979-07-05 | Takasago Corp | Elemene oxides |
-
2003
- 2003-03-26 EP EP03816443A patent/EP1613611A1/en not_active Withdrawn
- 2003-03-26 AU AU2003226618A patent/AU2003226618A1/en not_active Abandoned
- 2003-03-26 JP JP2004569894A patent/JP4551225B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2004085417A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4551225B2 (en) | 2010-09-22 |
| JP2006521285A (en) | 2006-09-21 |
| AU2003226618A1 (en) | 2004-10-18 |
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