Sugar conjugates of fulvestrant (ICI 182,780): efficient general procedures for glycosylation of the fulvestrant core
摘要:
We have prepared glucose and cellobiose conjugates at the phenolic 3- and hydroxylic 17-positions of the pure antiestrogenic compound fulvestrant (ICI 182,780), which has recently been approved in the USA for the treatment of advanced postmenopausal breast cancer. Glycosylation at the 17-position was achieved most effectively using pivaloyl protection of the sugar imidates employed, which we found suppressed the competing transacylation reaction and led to improved yields of the product glycosides. (C) 2003 Elsevier Ltd. All rights reserved.
Sugar conjugates of fulvestrant (ICI 182,780): efficient general procedures for glycosylation of the fulvestrant core
摘要:
We have prepared glucose and cellobiose conjugates at the phenolic 3- and hydroxylic 17-positions of the pure antiestrogenic compound fulvestrant (ICI 182,780), which has recently been approved in the USA for the treatment of advanced postmenopausal breast cancer. Glycosylation at the 17-position was achieved most effectively using pivaloyl protection of the sugar imidates employed, which we found suppressed the competing transacylation reaction and led to improved yields of the product glycosides. (C) 2003 Elsevier Ltd. All rights reserved.