摘要:
The present invention relates to compound of formula (I) wherein R is O-R 3 or (II) R 1 and R 2 are identical or different and are each independently H, (C 1 -C 6 )alkyl, -CO-(C 1 - C 21 )alkyl or -CO-(C 11 -C 21 )alkenyl group, provided that at least one of R 1 or R 2 is H or (C 1 -C 6 )alkyl, R3 is a -CO-(C 11 -C 21 )alkyl or -CO-(C 11 -C 21 )alkenyl group, or its pharmaceutically acceptable salts, racemates, diastereoisomers, enantiomers, or mixtures thereof, for use in prevention and/or treatment of a disease or disorder linked to an exacerbated vascular, lymphatic or mucosal permeability.
摘要:
The present invention relates to a process for preparing a carotenoid mono-ester of the formula (I), including the stereoisomers of formula (I), wherein, R 1 is e.g. hydrogen, C 1 -C 20 -alkyl, C 2 -C 20 -alkenyl, C 4 -C 20 -alkdienyl, C 6 -C 20 -alktrienyl or C 8 -C 20 - alktetraenyl, R 2 is e.g. hydrogen or -NR a R b , wherein R a is e.g. hydrogen, C 1 -C 4 -alkyl, -C(O)-C 1 -C 3 -alkyl, -Boc or -Cbz, R b is e.g. hydrogen or C 1 -C 4 -alkyl, R 3 is e.g. hydrogen, and X 1 , X 2 are independently from each other CH 2 or C=O, which comprises reacting a phosphonium salt of the formula (II) or a stereoisomer thereof: formula (II) wherein X 1 is as defined for formula (I), R 4 is phenyl, tert-butyl or tolyl, and Y - is a suitable counteranion, with a 12'-apocarotenal ester of the formula (III) or a stereoisomer thereof: formula (III) wherein X 2 , R 1 , R 2 , and R 3 are as defined for formula (I), in the presence of a base or a cryptobase.
摘要:
Provided is a process for preparing a sorbate by contacting sorbic acid with an alcohol, a diol, a triol, a C 2 -C 4 -alkylene oxide, or a mono-or diglycidyl ether in a reactor under conditions sufficient to form the sorbate. The reaction is carried out under an atmosphere of reduced oxygen and in the substantial absence of a free radical inhibitor.
摘要:
Disclosed is a method of removing residual sorbic acid from a crude mixture containing a sorbate and sorbic acid comprising the steps of contacting a mixture comprising sorbic acid and a sorbate with a macroporous ion exchange resin functionalized with ammonium hydroxide groups at a concentration of at least 1.01 equivalents based on the equivalents of acids in the mixture to reduce the concentration of the sorbic acid in the mixture by at least 50%; then separating the ion exchange resin from the mixture to forma purified disorbate with a reduced concentration of sorbic acid. The method provides an efficient way of purifying and recovering sorbates, which are useful as low VOC coalescents for coatings formulations.
摘要:
The present invention relates to a composition comprising triethylene glycol disorbate and triethylene glycol monosorbate, at a disorbate to monosorbate weight-to-weight ratio of from 19:1 to 99: 1. The composition of the present invention is useful as a low VOC coalescent in coatings formulations.
摘要:
The invention relates to 2,4,6-octatrienoic acid derivative compounds having general formula (I) (CH 3 -CH=CH-CH=CH-CH=CH-CO-O-) n -R (I) consisting of esters wherein n = 1, 2, 3 and wherein R is selected from alkyl, aryl or cycloalkyl of a polyol, phenol or phenolic acid; or consisting of a salt wherein n = 1 and R = arginine, as active ingredients in a pharmaceutical or cosmetic composition having a combined antioxidant activity against free radicals together with an anti- inflammatory action.
摘要:
This invention describes processes to make products by cross metathesis of functionalized or non- functionalized olefins with poly-branched poly-olefins such as terpenes (e.g., farnesene(s), α-farnesene, β- farnesene, β-myrcene, etc.) and compositions made by such methods. More particularly, the present invention relates to methods of making (i) cross metathesis products by a cross metathesis reaction between at least one hydrovinylated olefinic substrate and at least one hydrovinylated cross metathesis substrate in the presence of at least one olefin metathesis catalyst; (ii) cross metathesis products by a cross metathesis reaction between at least one hydrovinylated olefinic substrate and at least one cross metathesis substrate in the presence of at least one olefin metathesis catalyst; and (iii) cross metathesis products by a cross metathesis reaction between at least one olefinic substrate and at least one hydrovinylated cross metathesis substrate in the presence of at least one olefin metathesis catalyst; as well as compositions made by such methods.