Preparation of triazamacrocycles containing only secondary amine functions using both tosyl and boc protecting groups
作者:Krzysztof E. Krakowiak、Guoliang Yi、Jerald S. Bradshaw
DOI:10.1002/jhet.5570330672
日期:1996.11
in acetic acid to remove the tosyl protecting groups. 2-Allyloxymethyl-4,11,18- triazaoxacycloheneicosane (4) was prepared in two ways. First, N,N′,N″-tritosylbis(hexamemylene)triamine (18) was treated with 2-allyloxymethyl-3-oxa-1,6-hexanediol ditosylate (23) and cesium carbonate in dimethylformamide followed by sodium amalgam to remove the tosyl protecting groups. The second preparation of 4 was done
1,8,15-三氮杂杂环庚烷(1); 1,9,17-triazacyclotetracosane(2)和1,10,19-triazacycloheptacosane(3)通过处理适当的制备N,N-双(ω-溴烷基)甲苯磺酰胺8-10用适当的N,N- '-ditosyl -α,ω-二氨基烷烃11-13在二甲基甲酰胺中的反应,使用氢化钠作为碱,然后用苯酚和33%的氢溴酸在乙酸中去除甲苯磺酰基保护基。以两种方式制备了2-烯丙氧基甲基-4,11,18-三氮杂氧杂环烯二十烷(4)。首先,N,N',N''-三甲苯磺酰基双(六亚甲基)三胺(18用二甲基甲酰胺中的2-烯丙氧基甲基-3-氧杂-1,6-己二醇二甲苯磺酸酯(23)和碳酸铯,然后用汞齐钠处理,除去甲苯磺酰基保护基。通过用23,然后在异丙醇中的盐酸除去BOC保护基,用23处理18的三BOC类似物,完成4的第二制备。使用这两个过程的总产量为4,非常接近。