PROCESS FOR THE PREPARATION OF 17-(3-HYDROXYPROPYL)-17-HYDROXYSTEROIDS

摘要

The present invention relates to a process for the preparation of 17α-(3-hydroxypropyl)-17β-hydroxysteroids of the formula I starting from 17-ketosteroids of the formula III via the intermediates of the formula V wherein the radicals R3, R5, R6, R7, R10, R13, R15, R16, R40, R41 and R42 have the meaning indicated in the description.