Asymmetric Synthesis of Methyl (-)-13-Oxo-15,16-dinorlabda-8(17),11E-dien-19-oate, Methyl Ester of a Potent Suppressor toward Carcinogenic Promotor
作者:Takahiro Katoh、Shinsuke Mizumoto、Masato Fudesaka、Tetsuya Kajimoto、Manabu Node
DOI:10.1248/cpb.54.1333
日期:——
Asymmetric synthesis of methyl ester (4) of (-)-13-oxo-15,16-dinorlabda-8(17),11E-dien-19-oic acid (1), which exhibited the most potent activity for the prevention of incipient carcinogenesis among the isolated diterpenes from Thuja standishii and its related plants, was achieved by using methyl (-)-1,4a-dimethyl-5-oxodecahydronaphthalene-1-carboxylate (5) as a strating material, which was easily prepared
(-)-13-oxo-15,16-dinorlabda-8(17),11E-dien-19-oic acid(1)的甲酯(4)的不对称合成,其对预防甲氧磷的活性最强。通过使用(-)-1,4a-二甲基-5-氧代十二氢萘-1-羧酸甲酯(5)作为顺式提取材料,可以轻松地从金钟柏及其相关植物中分离出的二萜之间发生早期致癌作用。贝克酵母催化的不对称还原反应可实现规模化。