Process for producing steroid compounds having an oxogroup in the side chain
申请人:TEIJIN LIMITED
公开号:EP0013082A1
公开(公告)日:1980-07-09
A process for producing a steroid compound having an oxo group in the side chain, which comprises condensing an acid halide having a steroid skeleton with an organozinc compound at a halocarbonyl group of the acid halide in an inert organic medium in the presence of a catalytic amound of an ether capable of forming a complex with the organozinc compound and, if desired, hydrolyzing the product. The process gives the steroid compound in a high yield, and often in an almost quantitative yield. The steroid compound can be an important intermediate for the production of vitamin D3 analogs, such as active forms of vitamin D3.