Stereoselective Synthesis of cis-5-Alkyl-(S)-prolines from (S)-Pyroglutamic Acid via 5-Alkyl-5-hydroxy-(S)-prolines
作者:Hao Li、Takeshi Sakamoto、Yasuo Kikugawa
DOI:10.1016/s0040-4039(97)01563-3
日期:1997.9
Introduction of alkyl groups with trialkylaluminums in the 5-position of the pyroglutamic ring system without ring opening and subsequent hydrogenation over Pt/C lead to exclusively cis-5-alkyl-(S)-prolines without epimerization of the chiral centre. © 1997 Elsevier Science Ltd.
在不带开环的焦谷氨酸环系统的5位引入具有三烷基铝的烷基,并随后在Pt / C上氢化导致仅顺式-5-烷基-(S)-脯氨酸,而没有手性中心的差向异构化。©1997爱思唯尔科学有限公司。