Full details of a study leading to a synthesis of the optically active C13-C26 lower subunit of rhizoxin including the side-chain chromophore characteristic of the full class of antimitotic agents are described. A key element of the synthesis is the stereoselective introduction of the C18-C19 trisubstituted olefin through use of a Wadsworth-Horner-Emmons condensation of 3 with beta-keto phosphonate 38 bearing resident functionality suitable for the diastereoselective introduction of C15-C17 employing a hydroxyl-directed reduction of the resultant beta-hydroxy ketone.
Full details of a study leading to a synthesis of the optically active C13-C26 lower subunit of rhizoxin including the side-chain chromophore characteristic of the full class of antimitotic agents are described. A key element of the synthesis is the stereoselective introduction of the C18-C19 trisubstituted olefin through use of a Wadsworth-Horner-Emmons condensation of 3 with beta-keto phosphonate 38 bearing resident functionality suitable for the diastereoselective introduction of C15-C17 employing a hydroxyl-directed reduction of the resultant beta-hydroxy ketone.
Method for the preparation of taxol and its derivatives
申请人:Pharmacia & Upjohn S.p.A.
公开号:US05767282A1
公开(公告)日:1998-06-16
A process of making taxane derivatives by reacting Baccatin III derivatives with an oxazolidine which contains a thioester substituent at the 4-position.
通过将紫杉醇III衍生物与在4位含有硫酯取代基的噁唑烷反应,制备紫杉醇衍生物的过程。
Gazizov,M.B. et al., Journal of general chemistry of the USSR, 1977, vol. 47, # 8, p. 1747
作者:Gazizov,M.B. et al.
DOI:——
日期:——
Synthesis of the lower subunit of rhizoxin
作者:Dale L. Boger、Timothy T. Curran
DOI:10.1021/jo00034a010
日期:1992.4
Full details of a study leading to a synthesis of the optically active C13-C26 lower subunit of rhizoxin including the side-chain chromophore characteristic of the full class of antimitotic agents are described. A key element of the synthesis is the stereoselective introduction of the C18-C19 trisubstituted olefin through use of a Wadsworth-Horner-Emmons condensation of 3 with beta-keto phosphonate 38 bearing resident functionality suitable for the diastereoselective introduction of C15-C17 employing a hydroxyl-directed reduction of the resultant beta-hydroxy ketone.