专利号:US-7220870-B2 优先权日:1995-03-14 标 题:Hydrolytic kinetic resolution of cyclic substrates 发明人:JACOBSEN ERIC N; TOKUNAGA MAKOTO; LARROW JAY F 权利人:HARVARD COLLEGE 摘要:The present invention relates to a process for stereoselective or regioselective chemical synthesis which generally comprises reacting a nucleophile and a chiral or prochiral cyclic substrate in the presence of a non-racemic, chiral catalyst to produce a stereoisomerically- and/or regioisomerically-enriched product. The present invention also relates to hydrolytic kinetic resolutions of racemic and diastereomeric mixtures of epoxides.
参考标题:α-N-Protected Dipeptide Acids: A Simple And Efficient Synthesis Via The Easily Accessible Mixed Anhydride Method Using Free Amino Acids In Dmso And Tetrabutylammonium Hydroxide 作者:G. Verardo,A. Gorassini |发布日期:2013.5 摘要:To Find Simple And Efficient Methods For Their Synthesis. For This Reason, We Have Investigated The Synthesis Of α‐n‐protected Dipeptide Acids By Reacting The Easily Accessible Mixed Anhydride Of α‐n‐protected Amino Acids With Free Amino Acids Under Different Reaction Conditions. The Combination Of Tba‐oh And Dmso Has Been Found To Be The Best To Overcome The Low Solubility Of Amino Acids In Organic
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