Macrocyclic derivatives with a sucrose scaffold: insertion of a long polyhydroxylated linker between the terminal 6,6′-positions
作者:Bartosz Chaciak、Kajetan Dąbrowa、Paweł Świder、Sławomir Jarosz
DOI:10.1039/c8nj02808g
日期:——
A series of five new macrocyclic hybrids with a sucrose scaffold were prepared by the reaction of activated 1′,2,3,3′,4,4′-hexa-O-methylsucrose with diversely functionalized D-mannitols. The 21-, 25-, and 31-membered representatives containing mannitol units were prepared by a macrocyclization of 6,6′-di-O-propargylated sucrose with protected 1,6-diazido-D-mannitol or 6,6′-di-azidosucrose with propargylated
通过活化的1',2,3,3',4,4'-六-O-甲基蔗糖与功能多样的D-甘露糖醇的反应制备了一系列五个新的具有蔗糖支架的大环杂种。含有甘露醇单元的21、25和31元代表是通过将6,6'-二-O-炔丙基蔗糖与受保护的1,6-二叠氮基-D-甘露醇或6,6'-di进行大环化制备的-叠氮蔗糖与炔丙基化的D-甘露醇(“点击”方法),而23位代表则通过1',2,3,3',4,4'-六-O-甲基-6的双N-烷基化制备1,6'-二氨基蔗糖与1,6-二溴酰基D-甘露醇。测试了所有蔗糖衍生物作为手性识别α-苯基乙铵(α-PEA)阳离子的假定宿主。在一种情况下,与我们先前报道的所有基于蔗糖的大环主体形成鲜明对比,观察到了R-对映体的意外反向偏好(K R / K S = 1.5)。