The disclosure describes an improved process for producing optically active compounds of Formula II or III, which compounds are useful as intermediates for preparing compounds active as inhibitors of retroviral protease enzymes: ##STR1## wherein R.sub.1, R.sub.50 and Z are described in the specification. The improved process includes either synthesis of diastereomeric iodolactones which are separated prior to conversion to compounds of Formula II or III or synthesis of an epoxide which is converted directly to compounds of Formula II and III.
本公开说明了一种改进的制备具有公式II或III的光学活性化合物的过程,这些化合物在制备作为逆转录病毒
蛋白酶酶
抑制剂活性化合物的中间体时有用:##STR1##其中R.sub.1,R.sub.50和Z在说明书中描述。改进的过程包括合成分离成二对映异构
碘内酯,在转化为公式II或III的化合物之前分离,或合成
环氧化物,直接转化为公式II和III的化合物。