A process and novel starting materials for the production of 17.alpha.-ethynyl-17.beta.-hydroxy-18-methyl-4,15-estradien-3-one of Formula I ##STR1## are disclosed. Novel 17-ketone starting materials have the Formula II ##STR2## wherein R is an alkyl residue of 1-3 carbon atoms and ##STR3## is the grouping ##STR4## wherein R' is an acyl group of up to 10 carbon atoms.
本发明公开了一种生产17.alpha.-
乙炔基-17.beta.-羟基-18-甲基-4,15-雌二烯-3-酮(
化学式I)的过程和新型起始材料。新型17-酮起始材料的
化学式为II,其中R是1-3个碳原子的烷基残基,而##STR3##是羧酰基为最多10个碳原子的基团##STR4##。