title: Total synthesis of a CD-ring: side-chain building block for preparing 17-epi-calcitriol derivatives from the Hajos-Parrish dione.
abstract: 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.
authors: Institute of Organic Chemistry, Polish Academy of Sciences, ul. Kasprzaka 44/52, 01-224 Warsaw, Poland.
authors: Karol
authors: K
authors: Michalak
authors: Jerzy
authors: J
authors: Wicha
mesh_terms: D052176:Azulenes / Q000737:chemistry*; D002117:Calcitriol / Q000031:analogs & derivatives / Q000138:chemical synthesis*; D007192:Indenes / Q000138:chemical synthesis* / Q000737:chemistry; D015394:Molecular Structure; D013237:Stereoisomerism
chemical_list: D052176:Azulenes; D007192:Indenes; C005525:azulene; D002117:Calcitriol