摘要:
Compounds of the formula 1 wherein, R is hydrogen, alkyl or substituted alkyl, aryl or substituted aryl, are useful intermediates in the synthesis of fragrance ingredients such as Ambrox 2
摘要:
The retinoid X receptors (RXRs) are ligand-activated transcription factors heterodimerize with a number of nuclear hormone receptors, thereby controlling a variety of physiological processes. The invention relates to novel enantiomer compounds which are derivatives of dihydroretinoic acid, their stereoselective synthesis, to pharmaceutical compositions containing the same and to the use of same in the treatment of diseases.
摘要:
Methods are provided for synthesis of abscisic acid and 8′ analogues thereof (including an enantiopure 8′-acetylene analogue) including methods wherein the previously reported first step of oxidation of 2,6-dimethylphenol (VI) to 2,6-dimethylbenzoquinone, mono ketal (VII) is replaced by a novel two step process comprising (i) oxidation of 2,6-dimethylphenol (VI) using potassium peroxymonosulfate with a catalytic amount of iodobenzene to produce 2,6-dimethylbenzoquinone (XVI) and (ii) ketalization of 2,6-dimethylbenzoquinone (XVI) using ethylene glycol, trimethylorthoformate with a catalytic amount of p-toluenesulfonic acid to produce 2,6-dimethylbenzoquinone, mono ketal (VII).
摘要:
A double conjugate molecule made of a retinoid, an organic acid, particularly an α-hydroxy acid, and an alcohol or acyl group, is provided which is useful in treating skin conditions, particularly aging. The retinoid, organic acid, and alcohol/acyl group are preferably linked via ester bonds.
摘要:
Compounds of the formula 1 wherein, R is hydrogen, alkyl or substituted alkyl, aryl or substituted aryl, are useful intermediates in the synthesis of fragrance ingredients such as Ambrox 2