Olefinic aldehydes and epoxides with terminal double bonds react with Grignard reagents, and the acetates made from the resulting alcohols undergo double bond cleavage on treatment with RuCl3·xH2O in the presence of NaIO4 to give acetoxy diacids. Hydrolysis with LiOH then affords hydroxy diacids.
带有末端双键的烯烃醛和环氧化物与格氏试剂反应,由所得醇制得的乙酸酯在NaIO 4存在下用RuCl 3 · x H 2 O处理后进行双键裂解,生成乙酰氧基二酸。然后用LiOH水解得到羟基二酸。
Preparative regio- and stereoselective α-hydroxylation of medium chain mono- and dicarboxylic fatty acids
作者:Klara Bangert、Alexander Swoboda、Stephan Vrabl、Haris Rudalija、Mattia Lazzarotto、Stefan Payer、Anton Glieder、Christian A. M. R. van Slagmaat、Stefaan M. A. De Wildeman、Wolfgang Kroutil
DOI:10.1039/d3gc04593e
日期:——
for the valorization of renewables like fattyacids by α-hydroxylation. Here, peroxygenases were envisioned to be of high interest as they require common hydrogenperoxide as the only oxidant generating water as the sole side product. As the unspecific peroxygenase from Hypoxylon sp. (HspUPO) turned out to be not selective for α-hydroxylation, various bacterial peroxygenases from the CYP152 family were
Skin treatment compositions containing a system for enhancing sphingolipid production in skin containing N-acetyl-L-cysteine and an alpha hydroxy acid (or a salt, or an ester thereof).
含 N-乙酰-L-半胱氨酸和α-羟基酸(或其盐,或其酯)的促进皮肤鞘脂生成系统的皮肤治疗组合物。
Cosmetic compositions for reducing or preventing signs of cellulite
申请人:UNILEVER PLC
公开号:EP0728471A2
公开(公告)日:1996-08-28
The invention is directed to increasing the strength and firmness of the skin and reducing the signs of cellulite. The inventive method includes applying to the skin a composition that includes inositol phosphate, particularly phytic acid and its salts, in a cosmetically acceptable carrier.
The present invention provides a production method of an organic compound, in which a reaction is performed between functional groups without using any solvents. The present invention relates to a production method of an organic compound, in which a reaction is performed between functional groups by using a mechanochemical effect.