A short and efficient synthesis of DE-A,B(22E,24S)-8β-(benzoyloxy)-25-hydroxyergost-22-ene a valuable intermediate in the total synthesis of 25-hydroxylated vitamin D2-metabolites
作者:Jaap C. Hanekamp、Rob Boer Rookhuizen、Henry L.A.v.d. Heuvel、Hendrik J.T. Bos、Lambert Brandsma
DOI:10.1016/s0040-4039(00)92396-7
日期:1991.9
The titel compound was synthesised in 8 steps starting from vitamin D2. The side-chain was constructed using a chiral, stereoselective Wittig-reagent.
[EN] METHODS FOR PRODUCING PARICALCITOL<br/>[FR] PROCÉDÉS DE PRODUCTION DE PARICALCITOL
申请人:AZAD PHARMACEUTICAL INGREDIENT
公开号:WO2010009879A3
公开(公告)日:2010-04-22
25-hydroxydihydrotachysterol2 an innovative synthesis of a key metabolite of dihydrotachysterol2
作者:Jaap C. Hanekamp、Rob Boer Rookhuizen、Hendrik J.T. Bos、Lambert Brandsma
DOI:10.1016/s0040-4020(01)85618-0
日期:1992.1
A new synthesis of 25-hydroxydihydrotachysterol2 is described The hydroxylated side-chain is constructed stereoselectively using a chiral Wittig reagent. The A-ring synthon is introduced utilising the Wittig-Horner method as developed by Lythgoe et al. The preparation of the metabolite is carried out in 18 steps.