申请人:Schering, Aktiengesellschaft
公开号:US04416985A1
公开(公告)日:1983-11-22
A process for preparing a 3.beta.,7.beta.-dihydroxy-.DELTA..sup.5 steroid of the formula ##STR1## wherein Q is ##STR2## and R.sub.1 is hydrogen, trimethylacetyl, tert-butyldimethylsilyl, dimethyl-2-(3-methylbutyl)silyl or tribenzylsilyl, comprises fermenting a 3.beta.-hydroxy-.DELTA..sup.5 -steroid of the formula ##STR3## wherein Q is as defined above, and R.sub.2 is hydrogen or alkanoyl of 2-6 carbon atoms, with a culture of Botryodiplodia malorum to obtain the corresponding 3.beta.,7.beta.-dihydroxy-.DELTA..sup.5 -steroid; and, optionally, reacting the resultant product with trimethylacetic anhydride, tert-butyldimethylsilyl chloride, dimethyl-2-(3-methylbutyl)silyl chloride, or tribenzylsilyl chloride.
一种制备3β,7β-二羟基-Δ^5类固醇的方法,其化学式为##STR1##其中Q为##STR2##,R.sub.1为氢、三甲基乙酰、叔丁基二甲基硅基、二甲基-2-(3-甲基丁基)硅基或三苯基硅基,包括发酵化学式为##STR3##其中Q如上所定义,R.sub.2为氢或2-6碳原子的烷酰的3β-羟基-Δ^5-类固醇,并使用Botryodiplodia malorum菌株培养以获得相应的3β,7β-二羟基-Δ^5-类固醇;可选地,将所得产物与三甲基乙酸酐、叔丁基二甲基硅氯化物、二甲基-2-(3-甲基丁基)硅氯化物或三苯基硅氯化物反应。