Synthesis of pyrazolo[3.2-c]cholest -4-ene derivatives from cholesterol

摘要

Synthesis of pyrazolo[3.2-c]cholest-4- ene 3 and [1'H]-5'-(methylthio) pyrazolo[3.2-c]cholest -4- ene 5 from 2-ethoxymethylene -4- cholesten-3- one 2 and 2- bis (methylthio) methylene-4- cholesten-3- one 4,respectively,are reported.