The freeradicals 3-ethoxy-2-(ethoxycarbonyl)-3-oxopropyl (1.) and 3-ethoxy-2-(ethoxycarbonyl)-2-methyl-3-oxopropyl (2.) were generated by photolysis of perester precursors in i) hexane solution, ii) in the presence of β-cyclodextrin, and iii) in NaY zeolite. While freeradicals in solution are reluctant to rearrange, they do so when encapsulated in β-cyclodextrin or NaY zeolite. The coenzyme-B12-dependent
Etude de la r�activit� de la fonction carbonyle avec le c�t�ne en pr�sence d'un alcoxyde de titane. 1�re communication. Nouvelle m�thode de synth�se de ?-hydroxyesters
作者:Laurent Vuitel、Andr� Jacot-Guillarmod
DOI:10.1002/hlca.19740570622
日期:——
A new synthesis of β-hydroxyesters involving a reaction between a carbonyl compound, ketene and an alkyl-orthotitanate is described.
描述了一种新的β-羟基酯的合成方法,该方法涉及羰基化合物,乙烯酮和奥尔蒂钛酸烷基酯之间的反应。
Hydroxy-oligocarboxylic esters: effects on nerve and use for cutaneous and mucocutaneous organs or sites
申请人:Yu J. Ruey
公开号:US20070093551A1
公开(公告)日:2007-04-26
A composition and method for producing a beneficial effect on a subject's nerve associated with at least one of a cosmetic condition, a dermatological indication and a dental indication and another condition. The composition comprises a hydroxy-oligocarboxylic ester and is formulated for topical administration of the product to a subject to produce the beneficial effect. The method includes topically applying to the subject in a region where the beneficial effect is desired a hydroxy-oligocarboxylic ester in an amount effective to produce the beneficial effect.