作者:M. Venkat Ram Reddy、John P. Rearick、Nyssa Hoch、P. Veeraraghavan Ramachandran
DOI:10.1021/ol006583z
日期:2001.1.1
[figure: see text] This first asymmetric synthesis of enantiopure desacetylumuravumbolide and umuravumbolide via asymmetric reduction, allylboration, and ring-closing metathesis confirms their revised structures and configurations. A convenient procedure to upgrade the enantiopurity of alpha,beta-acetylenic alcohols is also described.
[图:见正文]通过不对称还原,烯丙基硼化和闭环易位,对映体纯的去乙酰基尿嘧啶核苷和umuravumbolide的首次不对称合成证实了它们的修饰结构和构型。还描述了一种方便的方法,可以提高α,β-炔醇的对映体纯度。