Synthesis of manwuweizic acid, an anticancer triterpenoid
作者:Jia-Sen Liu、Yong Tao
DOI:10.1016/s0040-4020(01)89869-0
日期:1992.1
Manwuweizic acid (1), an anticancer triterpenoid isolated from Scisandra propinqua, was synthesized from lanosterol (2) by stereoselective introduction of the (Z) α,β-unsaturated carboxylic terminal of the side chain and by abnormal Beckmannrearrangement of ring A. A new reagent of DMSO-DCC-TFA for protection of a carboxyl group as a methylthiomethyl (MTM) ester is also described.
Methylthiomethyl esters of aliphatic acids have been found useful in imparting or enhancing flavors in foodstuffs. They are particularly useful with respect to dairy-type flavors.
脂肪族酸的甲硫甲酯已被发现在食品中赋予或增强风味方面非常有用。对于乳制品类型的风味,它们尤其有用。
Flavoring or flavor-enhancing compositions and foodstuffs containing methylthiomethyl ester
申请人:Polak's Frutal Works B.V.
公开号:EP0007673A1
公开(公告)日:1980-02-06
Methylthiomethyl esters of aliphatic acids have been found useful in imparting or enhancing flavors in foodstuffs. They are particularly useful with respect to fruit and berry flavors.