作者:Weimin Liu、John A. Walker、Jiong J. Chen、Dean S. Wise、Leroy B. Townsend
DOI:10.1016/0040-4039(96)01121-5
日期:1996.7
A direct metalation method has been developed for the synthesis of novel pyrazine C-nucleosides. The regiochemistry was controlled by selecting different substituents on the pyrazine ring and excellent stereoselectivity was achieved via a hydride delivery strategy. The scope and limitations of this method were studied. The uniquely designed 4b is a versatile synthon for the preparation of other pyrazine
已经开发了一种直接金属化方法,用于合成新型吡嗪C-核苷。通过选择吡嗪环上的不同取代基来控制区域化学,并且通过氢化物递送策略实现了优异的立体选择性。研究了该方法的范围和局限性。设计独特的4b是用于制备其他吡嗪C-核苷的通用合成子。