Process for the preparation of 6-methyl-delta-4,6-3-keto steroids
申请人:SCHERING AKTIENGESELLSCHAFT
公开号:EP0085900A2
公开(公告)日:1983-08-17
A process for preparing 6-methyl-Δ4,6-3-keto steroids of
wherein X is
, comprises reacting a corresponding Δ4-3-keto steroid with methoxymethyl acetate (CH3-O-CH2-OAc) in an inert solvent at temperatures above room temperature in the presence of an alkali metal acetate.
一种制备 6-甲基-Δ4,6-3-酮类固醇的工艺,其中 X 为 ,包括在惰性溶剂中,在碱金属醋酸盐存在下,使相应的 Δ4-3 酮类固醇与乙酸甲氧基甲酯(CH3-O-CH2-OAc)在室温以上的温度下反应。
Yeast strains possessing the interrupted ATF2 gene and their applications
申请人:Hoechst Marion Roussel
公开号:US20010012630A1
公开(公告)日:2001-08-09
A subject of the invention is a modified yeast strain in which the acetyl-CoA pregnenolone acetyltransferase (APAT) activity is eliminated by altering the gene coding for this activity with resultant stabilization of 3&bgr;-hydroxysteroids.