Stereocontrol in intramolecular Michael–aldol reaction sequences of 3-acetoacetoxycholest-4-en-6-ones
Abstract
An Intramolecular Michael–aldol reaction sequence upon 3-acetoacetoxycholest-4-en-6-ones leads stereoselectively to the corresponding 3,6-dihydroxytetrahydrobenzo[4,5,6]cholestan-5′(6′H)-ones.