Stereoselective synthesis of cyclobutyl GABA analogues and related compounds from (−)-(S)-verbenone
作者:Albertina G. Moglioni、Beatriz N. Brousse、Angel Álvarez-Larena、Graciela Y. Moltrasio、Rosa M. Ortuño
DOI:10.1016/s0957-4166(02)00137-4
日期:2002.4
The highly stereoselective conjugate addition of nitromethane to α,β-unsaturated cyclobutyl esters derived from (−)-(S)-verbenone has been executed to afford the adducts as single stereoisomers in good yields. These products furnish cyclobutyl GABA analogues and γ-lactams which, in turn, can be used as precursors of pyrrolidines. Moreover, both the enantiopure γ-nitro esters and the derived γ-amino
已经进行了硝基甲烷到衍生自(-)-(S)-马洛酮的α,β-不饱和环丁基酯的高度立体选择性共轭加成反应,以高收率提供了作为单一立体异构体的加合物。这些产品提供了环丁基GABA类似物和γ-内酰胺,它们又可用作吡咯烷的前体。此外,对映体纯的γ-硝基酯和衍生的γ-氨基酯都可能用于掺入γ-氨基拟肽中。