Development of an efficient and stereoselective manufacturing route to idoxifene

被引:14
作者
Ace, KW [1 ]
Armitage, MA [1 ]
Bellingham, RK [1 ]
Blackler, PD [1 ]
Ennis, DS [1 ]
Hussain, N [1 ]
Lathbury, DC [1 ]
Morgan, DO [1 ]
O'Connor, N [1 ]
Oakes, GH [1 ]
Passey, SC [1 ]
Powling, LC [1 ]
机构
[1] GlaxoSmithKline Pharmaceut, Chem Dev, Tonbridge TN11 9AN, Kent, England
关键词
D O I
10.1021/op0100394
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
A literature route to 1-(2-{4-[(E)-1-(4-iodophenyl)-2-phenyl-but-1-enyl]phenoxy}ethyl)pyrrolidine (idoxifene) has been modified to tackle various scale-up issues and provide initial supplies. A new highly efficient, robust, and stereoselective manufacturing route is described in detail. This route involves diastereoselective synthesis of tertiary alcohol (1RS,2SR)-1-(4-iodophenyl)-2-phenyl-1-[4-(2-pyrrolidin-1-yl-ethoxy)phenyl]butan-1-ol by Grignard addition to the ketone 1-(4-iodophenyl)-2-phenyl-1-butanone followed by derivatisation and stereoselective syn elimination to provide idoxifene in excellent yield and geometric purity. Evaluation of a more direct route to idoxifene using a McMurry low-valent titanium coupling reaction is also described.
引用
收藏
页码:479 / 490
页数:12
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