Conversion of 2,6-anhydro-d-altrose and -mannose derivatives with 4-substituted phenyl thiols to prepare compounds with potential antithrombotic activity
作者:Éva Bozó、Sándor Boros、János Kuszmann
DOI:10.1016/s0008-6215(01)00102-1
日期:2001.6
respectively, in the presence of trimethylsilyl triflate afforded the corresponding dithioacetal derivatives. All arylthio derivatives obtained after deacetylation were tested for their oral antithrombotic activity.
乙酰化3,4-二-O-乙酰基-2,6-脱水-D-阿托拉糖苷甲基,得到的混合物除含有1,3,4-三-O-乙酰基-2,6-脱水-D-阿糖基吡喃糖外,还包含2,6-脱水-D-altrose-四乙酸甲酯的(1R)和(1S)非对映异构体。在三氟甲磺酸三甲基甲硅烷基酯存在下用4-氰基苯硫醇处理该混合物,得到的混合物含有3,4,5-三-O-乙酰基-2,6-脱水-D-altroses双(4-氰基苯基)二硫缩醛,相应的O-甲基S-芳基单硫代半缩醛非对映异构体和β-硫代吡喃糖苷。3,4-二-O-乙酰基-2,6-甲基脱水-D-甘露吡喃糖苷的乙酰化作用导致2,6-脱水-D-甘露糖四乙酸甲酯的(1R)和(1S)非对映异构体的混合物转化为相应的O-甲基S-芳基单硫半缩醛。1,1,3,4,5-戊-O-乙酰基-2的处理 在三氟甲磺酸三甲基甲硅烷基酯存在下,分别用4-氰基-和4-硝基苯硫醇的6-脱水-醛-D-蔗糖和-D-甘