The synthesis of exemestane (Aromasin (R)), an irreversible steroidal aromatase inhibitor, specifically labelled with (13)C is reported. The preparation of [(13)C(3)]exemestane was achieved according to an eight-step procedure starting from the commercially available testosterone. (C) 2008 Elsevier Inc. All rights reserved.
Hard acid and soft nucleophile system. IV. Removal of benzyl protecting group with boron trifluoride etherate and dimethyl sulflide.
作者:KAORU FUJI、TAKEO KAWABATA、EIICHI FUJITA
DOI:10.1248/cpb.28.3662
日期:——
A new combination system consisting of boron trifluoride etherate and dimethyl sulfide has proved to be useful especially for the selective removal of the benzyl protecting group in a molecule having a Michael acceptor or carbonyl group (s).
作者:Erminia Fontana、Alberto Pignatti、Danilo Giribone、Enrico Di Salle
DOI:10.1016/j.steroids.2008.02.010
日期:2008.8
The synthesis of exemestane (Aromasin (R)), an irreversible steroidal aromatase inhibitor, specifically labelled with (13)C is reported. The preparation of [(13)C(3)]exemestane was achieved according to an eight-step procedure starting from the commercially available testosterone. (C) 2008 Elsevier Inc. All rights reserved.