Class 560/259 - 2,6,6-trialkyl cyclohexenyl in alcohol moiety

Subclass of Class 560 - Organic compounds -- part of the class 532-570 series
Definition: Compounds wherein the alcohol moiety is charcterized by
No. of patents: 39
Last issue date: 11/06/2007

Number	Title	Issue Date
7291749	Method for producing esterified astaxanthin from esterified zeaxanthin A method is described for preparing astaxanthin esters from zeaxanthin by acylation of zeaxanthin with an acylating agent followed by contacting the esterified zeaxanthin with an oxidizing agent to produce esterified astaxanthin. The astaxanthin esters are more stab...	11/06/2007
7220874	Esterification of xanthophylls Lutein and zeaxanthin, the main carotenoids in marigold flowers, and capsanthin and capsorubin, the main carotenoids in red peppers are esterified mainly with C-18 fatty acids. The pigments were re-esterified without isolating them from the natural saponified extrac...	05/22/2007
7067703	Manufacture of retinoids A process for the manufacture of retinal (I) comprises reacting a 5-(2,6,6-trimethyl-cyclohex-1-enyl)-1,4-pentadiene derivative (IIa) or a 5-(2,6,6-trimethyl-cyclohex-2-enyl)-1,4-pentadiene derivative (IIb) or a 5-(2,6,6-trimethyl-2-cyclohexen-1-ylidene)-1-pentene d...	06/27/2006
6552219	Process for the preparation of vitamin a, intermediates, and process for the preparation of the intermediates There are provided a dihalogen derivative represented by formula (2): ##STR1## wherein X represents a halogen atom and R2 represents a protective group for a hydroxyl group; a process for producing the same; and a process for producing vitamin ...	04/22/2003
6384270	Method for preparing vitamin A The invention relates to a process for making vitamin A from ethynyl-retro-଱-ionol using an allene acetate as intermediate....	05/07/2002
6177400	Unsaturated ketones and their use in perfumery The compounds according to the general formula ##STR1## in which formula the dotted lines indicate a single or a double bond, n and m are 0 or 1, R1 is hydrogen or an acyl group --C(O)R3, R3 being a linear or branched alky...	01/23/2001
5942648	Naphthalene derivatives Naphthalene derivatives of the fomula I ##STR1## in which: R1 is an alkyl or alkenyl radical which is unsubstituted, monosubstituted by CH or CF3 or monosubstituted by halogen and has 1 to 15 carbon atoms, it also being possible...	08/24/1999
5663459	Intermediates for the preparation of vitamin A and carotenoids and process for their preparation The present invention relates to novel intermediates for the preparation of vitamin A and carotenoids corresponding to the formula (II): ##STR1## in which A represents a hydrogen or an alkyl, alkenyl or alkoxy group containing 1 to 4 carbon atoms, an...	09/02/1997
5545399	Cosmetic composition A composition for topical application to the skin in order to promote the repair of photo-damaged or aged skin and/or to reduce or prevent damaging effects of ultra-violet light on skin and/or to lighten the skin comprising a hydrocalchone of general stru...	08/13/1996
5543559	Process for the enantioselective hydrogenation of ketosiophorone derivatives The present invention is concerned with a process for the manufacture of optically active compounds of the formula ##STR1## wherein R signifies lower alkyl, lower alkoxy, phenyl, benzyl or --NR21, R1 signifies lower a...	08/06/1996
5498738	Method for the preparation of a novel a-ring precursor for taxoids and novel intermediates The present invention a process for the preparation of a compound of the formula (X) useful as precursor for the A-ring in taxanes ##STR1## wherein R' is an ##STR2## in which R" is a linear, branched or cyclic alkyl group of 1 to 10 carbon ...	03/12/1996
5424478	Process for producing vitamin A derivatives The present specification relates to an industrially advantageous process for producing vitamin A derivatives which are useful as medicaments, feed additives, food additives and the like. The process provides vitamin A derivatives, particularly all-trans ...	06/13/1995
5234902	Compositions containing high proportion of alpha,3,3-trimethyl-1-cyclohexen-1-methanol derivative, organoleptic uses thereof and process for preparing same Described are alpha,3,3-trimethyl-1-cyclohexen-1-methanol derivative-containing composition having from about 85 up to about 90% by weight of a compound having the structure: ##STR1## and from about 10 up to about 15% by weight of a compound having t...	08/10/1993
5072019	Process for the manufacture of 4-(2-butenylidene)-3,5,5-trimethyl-2-cyclohexen-1-one A method for the manufacture of the four geometric isomers of 4-(2-butenyl)idene)-3,5,5-trimethy-2-cyclohexen-1-one is provided. The process comprises pyrolyzing a compound of the formula ##STR1## wherein R represents lower-alkyl-oxycarbonyl, aryl-ox...	12/10/1991
5001155	ଲ-ionone derivative as antifungal agent Novel 3-acyloxy-ଲ-ionone derivatives of the formula I ##STR1## wherein R represents n-propyl, C4 -C5 -alkyl or C1 -C4 alkoxymethyl display very effective microbicidal activity. They can especially be ...	03/19/1991
4963583	Beta-ionone derivatives as antifungal agents Novel 3-acyloxy-4-keto-ଲ-ionone derivatives of the formula I ##STR1## wherein Z is either the radical ##STR2## in which R1 represents C2 -C5 alkyl, C1 -C5 alkoxy-C1 -C5...	10/16/1990
4914229	Novel preparation of compounds of the 4-oxodamascone series, and novel scents from this class of compounds Process for the preparation of the compounds of the formulae Ia and Ib ##STR1## wherein A. 2,4,4-trimethylcyclohex-2-en-1-one oxime of the formula IIb ##STR2## is treated with a strong aqueous acid at from 30° to 80° C., preferably from 40° ...	04/03/1990
4613457	2-methyl pentanoic acid esters and perfume compositions containing them Methyl pentanoic acid esters corresponding to the formula ##STR1## wherein R is an olefinically unsaturated, straight-chain or branched-chain or carbocyclic hydrocarbon group, a phenyl or alkyl substituted phenyl group, a phenyl substituted alkyl gro...	09/23/1986
4609491	Tri- and tetra-substituted cyclohexen-1-methyl acetates as odorants Novel odorant substances of the formula: ##STR1## wherein: one of the three dotted lines represents an optional bond, R1 represents hydrogen, an alkyl group of one to four carbons or an alkenyl group of two to four carbons, R2 repres...	09/02/1986
4550211	Preparation of compounds of the 4-oxodamascone series, and novel scents from this class of compounds Process for the preparation of the compounds of the formulae Ia and Ib ##STR1## wherein A. 2,4,4-trimethylcyclohex-2-en-1-one oxime of the formula IIb ##STR2## is treated with a strong aqueous acid at from 30° to 80° C., preferably 40° to 70...	10/29/1985
4336401	Process for the preparation of damascenone A novel method of preparing 1-crotonoyl-2,6,6-trimethylcyclohexa-1,3-diene comprises treating an ester of the formula ##STR1## with a proton acid under essentially anhydrous conditions....	06/22/1982
4331814	Sulphones having a 1,5-dimethyl-hexa-1,5-dienylene group Sulphones useful for preparing polyenes have the formula: ##STR1## where the sulphonyl group replaces a hydrogen atom on carbon atom (a) or (b), R represents alkyl, aralkyl or aryl, optionally substituted, A and Q represent an optionally substituted ...	05/25/1982
4245109	Process for producing astaxanthin The compound 5[4(acyloxy or protected hydroxy-3-oxo-2,6,6-trimethyl-cyclohex-1-en-1-yl)-3-methyl-penta-1,4-dien- 3-ol], an intermediate for the coloring agent astaxanthin, its conversion to astaxanthin and its preparation from 4-oxo-ଲ-ionone includin...	01/13/1981
4233464	Cyclohexene carotinoid intermediates 1-[3-Methyl-3,5,5-trialkoxy-pent-1-yn-1-yl]-2,6-dimethyl-cyclohex-1-enes, which may or may not be methyl-substituted in the 2- and/or 6-position, are obtained by reacting the corresponding 1-[3-methyl-but-1-yn-3-en-1-yl]-2,6-dimethyl-cyclohex-1-enes with ...	11/11/1980
4225501	1,4-Epoxy-1,3,3-trimethyl-2-(2-buten-1-ylidene)-cyclohexanes The invention is concerned with odorant and/or flavoring substances, a process for the manufacture thereof, odorant and/or flavoring compositions containing same and a process for the preparation of said compositions. The invention is also concerned with ...	09/30/1980
4209450	Introduction of a carbonyl group into a cyclohexene ring A process for introducing an allyl-positioned carbonyl group into a 2,6,6-trimethylcyclohexene ring which carries a polyenyl radical in the 1-position, by oxidizing the ring with a halogen(V)-oxyacid or a salt of such an acid, and the new oxo compounds ob...	06/24/1980
4190561	Esters of cyclohexene, odoriferous compositions containing said esters and process for the preparation thereof Novel esters of cyclohexene are disclosed having the formula ##STR1## in which R represents hydrogen or a hydrocarbon group containing from 1 to 6 carbon atoms. These novel esters display a wide range of interesting odoriferous properties. A process ...	02/26/1980
4156090	Polyene compounds 15,15'-Didehydro-astaxanthin and ester derivatives thereof useful as coloring agents and intermediates for astaxanthin and a method for preparing astaxanthin from keto ଱-isophorone and intermediates therein....	05/22/1979
4105855	Manufacture of symmetrical carotenoids Symmetrical carotenoids are prepared from the half-molecules by dimerizing the phosphonium salts of the half-molecules with peroxides, peroxo compounds or peroxy compounds in an alkaline medium....	08/08/1978
4095038	Optically active cyclohexane derivatives A process for fermentatively hydrogenating and reducing ketoisophorone to produce optically active [4R,6R]-4-hydroxy-2,6,6-trimethyl-cyclohexanone useful as an intermediate in the production of optically active carotenoids and intermediates in the product...	06/13/1978
4077992	High temperature lubricant A high temperature lubricant comprising a gem disubstituted cyclic compound in which one radical is a short chain alkyl group and the other radical is a methylene group substituted by an alkyl, alkylene or aryl amido radical or an alkyl, alkylene or aryl ...	03/07/1978
4045476	1-(2,6,6-Trimethyl-3-hydroxy or lower alkanoyloxycyclohexen-1-yl)-3-methyl-4-penten-1-yn-3-ol compound A total synthesis of canthaxanthin or dinor-canthaxanthin, known food coloring agents, from pentols....	08/30/1977
4026949	Optically active cyclohexane derivatives A process for fermentatively hydrogenating and reducing ketoisophorone to produce optically active [4R,6R]-4-hydroxy-2,6,6-trimethyl-cyclohexanone useful as an intermediate in the production of optically active carotenoids and intermediates in the product...	05/31/1977
4022807	Vitamin A esters A process for producing vitamin A esters, vitamin A aldehyde and 3,7-dimethyl-9-(1-hydroxy-2,2,6-trimethylcyclohexyl)-nona-2,4,6-trien-8-yn -1-ol and vitamin A acid esters from esters of 3,7-dimethyl-9-(1-hydroxy-2,2,6-trimethylcyclohexyl)-nona-2,4,6-trien...	05/10/1977
4000198	Hydroxy-acetylene-substituted cyclohexenone A total synthesis of canthaxanthin or dinor-canthaxanthin, known food coloring agents, from pentols....	12/28/1976
4000329	Flavoring compositions and foods containing one or more alkyl side chain methyl substituted or unsubstituted 2,2,6-trimethyl-1-cyclohexen-1-vinyl alkanoates Processes and compositions are described for the use in foodstuff, chewing gum, toothpaste and medicinal product flavor and aroma, tobacco flavor and aroma and perfume aroma augmenting, modifying, enhancing and imparting compositions and as foodstuff, che...	12/28/1976
3996296	Novel compounds, 4-(2,6,6-trimethyl-1,3-cyclohexadien-1-yl)-2-butanol and 4-(6,6-dimethyl-2-methylene-3-cyclohexen-1-yl)-2-butanol Described are the novel compounds, 4-(2,6,6-trimethyl-1,3-cyclohexadien-1-yl)-2-butanol and 4-(6,6-dimethyl-2-methylene-3-cyclohexen-1-yl)-2-butanol, and processes for preparing the aforementioned alcohols and acetate esters thereof....	12/07/1976
3956393	Process for preparing alpha-substituted acetaldehydes Processes are described for the preparation of 2,2,6-trimethyl-1-cyclohexen-1-ylacetaldehyde (hereinafter referred to as "beta-cyclohomocitral" which either (A) comprises the steps of: I. Oxidizing beta-ionone having the formula: ##SPC1## with a peralkan...	05/11/1976
3949006	Synthesis of vitamin A, intermediates and conversion thereof to vitamin A A synthesis of novel Vitamin A intermediates from betaionone is described as well as a conversion of the intermediates to Vitamin A. The length of the conjugated aliphatic side chain of beta-ionone is increased while still ultimately obtaining the desired...	04/06/1976

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Class 560/259 - 2,6,6-trialkyl cyclohexenyl in alcohol moiety