Synthesis of pyrazolo3.2-ccholest -4-ene derivatives from cholesterol

摘要

Synthesis of pyrazolo3.2-ccholest-4- ene 3 and 1'H-5'-(methylthio) pyrazolo3.2-ccholest -4- ene 5 from 2-ethoxymethylene -4- cholesten-3- one 2 and 2- bis (methylthio) methylene-4- cholesten-3- one 4,respectively,are reported.