Total Synthesis of a CD-Ring: Side-Chain Building Block for Preparing 17-epi-Calcitriol Derivatives from the Hajos–Parrish Dione
摘要:
An efficient synthesis of the key building block for 17-epi-calctriol from the Hajos-Parrish dione involving a sequence of diastereoselective transformation of the azulene core and the side-chain construction is presented.