Asymmetric synthesis of 4-substituted prolines as conformationally constrained amino acid analogues
作者:Qian Wang、N. AndréSasaki、Pierre Potier
DOI:10.1016/s0040-4020(98)00989-2
日期:1998.12
Treatment of readily available chiral building block 1 with (2R)-2,3-O-isopropylideneglyceraldehyde (5) provides a new route for asymmetric synthesis of 2,4-disubstituted pyrrolidines. Several proline-amino acid chimeras: proline-leucine, proline-lysine, proline-arginine and proline-glutamic acid, are synthesized in highly diastereomerically pure forms.
用(2 R)-2,3- O-异亚丙基甘油醛(5)处理容易获得的手性结构单元1为2,4-二取代的吡咯烷的不对称合成提供了新的途径。几种脯氨酸氨基酸嵌合体:脯氨酸-亮氨酸,脯氨酸-赖氨酸,脯氨酸-精氨酸和脯氨酸-谷氨酸以高度非对映异构体纯净的形式合成。