作者:Anthony R. Haight、Anne E. Bailey、William S. Baker、Michael H. Cain、Richard R. Copp、John A. DeMattei、Kelley L. Ford、Rodger F. Henry、Margaret C. Hsu、Robert F. Keyes、Steven A. King、Maureen A. McLaughlin、Laura M. Melcher、William R. Nadler、Patricia A. Oliver、Shyamal I. Parekh、Hemant H. Patel、Louis S. Seif、Mike A. Staeger、Gregory S. Wayne、Steven J. Wittenberger、Weijiang Zhang
DOI:10.1021/op049889k
日期:2004.11.1
Fiduxosin (1) has been under development at Abbott Laboratories for the treatment of benign prostatic hyperplasia. A convergent strategy required methodologies for preparation of an enantiomerically pure 3,4-cis-disubstituted pyrrolidine and a 2,3,5-trisubstituted thienopyrazine in a regiospecific manner. A [3+2] cycloaddition of an enantiopure azomethine ylide followed by a diastereoselective crystallization
雅培实验室正在开发 Fiduxosin (1),用于治疗良性前列腺增生。收敛策略需要以区域特异性方式制备对映体纯的 3,4-顺-二取代吡咯烷和 2,3,5-三取代噻吩并吡嗪的方法。采用对映体纯偶氮甲碱叶立德的 [3+2] 环加成,然后进行非对映体选择性结晶,以制备高非对映体和对映体纯度的苯并吡咯吡咯烷。开发了易于差向异构化的 O-芳基内酯的还原条件,并以高产率完成了醇/苯酚到醚的环化。噻吩并吡嗪是通过缩合巯基乙酸甲酯和区域特异性制备的 2-溴-3-氰基-5-苯基吡嗪来制备的。