Substitutions d'esters allyliques: préparation de glycals aminës en c-3 et étude de leur glycosidation acido-cataly-sée. Application à l'hémisynthè de glycosides du groupe des anthracyclines
作者:J. Boivin、M. Pais、C. Monneret
DOI:10.1016/s0008-6215(00)83831-8
日期:1980.3
-hex-l-enitol were prepared by substitution of the allylic ester function of 1,5-anhydro-3,4-di- O -benzoyl-2,6-dideoxy- l - arabino -hex-l-enitol with sodium azide, followed by reduction with lithium aluminum hydride. Glycosidation was performed with various alcohols, in particular daunomycinone. In the latter case, the partial synthesis of 4′-epi- and 3′,4′-epi-daunorubicines was accomplished in
摘要通过取代1,5-脱水-的烯丙基酯官能团制备了3-氨基-1,5-脱水-2,3,6-三苯氧基-1-阿拉伯糖和-1-核糖-己-1-烯醇。用叠氮化钠将3,4-二-O-苯甲酰基-2,6-二脱氧-1-甘氨酸-己-1--1-烯醇,然后用氢化锂铝还原。用各种醇,尤其是道诺霉素进行糖苷化。在后一种情况下,通过三个主要步骤完成了4'-epi-和3',4'-epi-柔红霉素的部分合成。