作者:François-Xavier Felpin、Jacques Lebreton
DOI:10.1021/jo020501y
日期:2002.12.1
A highly stereoselective asymmetric synthesis of (--)-sedamine and (--)-lobeline is described from benzaldehyde in 16 and 17 steps with an overall yield of 20% and 14%, respectively. The key intermediate syn-3,4-epoxyalcohol was prepared in a highly diastereomeric fashion (>99% ee, dr) and served as a common intermediate for both alkaloids.
从苯甲醛分16步和17步描述了高立体选择性的不对称合成(-)-sedamine和(-)-lobeline,总收率分别为20%和14%。以高度非对映异构的方式(> 99%ee,dr)制备关键中间体syn-3,4-环氧醇,并用作两种生物碱的常见中间体。