Partially protected D-glucopyranosyl isothiocyanates. Synthesis and transformations into thiourea and heterocyclic derivatives.
作者:Jose Fuentes、Wenceslao Moreda、Carmen Ortiz、Immaculada Robina、Colin Welsh
DOI:10.1016/s0040-4020(01)88231-4
日期:1992.1
The syntheses of 2,3,4-tri-O-acetyl(benzoyl)-β-D-glucopyranosyl isothiocyanates (3, 4) from the corresponding acylated N-(2,2-diethoxycarbonylvinyl)-β-D-glucopyranosylamine are described. Reactions of 3 and 4 with phenacylamine hydrochloride yielded N-phenacyl-N′-(2,3,4-tri-O-acyl-β-D-glucopyranosyl)thioureas (6, 7) whereas treatments of the same compounds with aminoacetone hydrochloride gave the N-nucleoside
描述了由相应的酰化的N-(2,2-二乙氧基羰基乙烯基)-β-D-吡喃葡萄糖胺合成2,3,4-三-O-乙酰基(苯甲酰基)-β-D-吡喃葡萄糖基异硫氰酸酯(3,4) 。3和4与苯甲胺盐酸盐的反应产生N-苯甲酰基-N'-(2,3,4-三-O-酰基-β-D-吡喃葡萄糖基)硫脲(6,7),而相同的化合物用氨基丙酮盐酸盐处理得到N-核苷类似物5-甲基-1-(2',3',4'-三-O-酰基-β-D-吡喃吡喃糖基)-4-咪唑啉-2-硫酮(8、9)。由4制备了部分保护的N-(2-噻唑啉-2-基)-β-D-吡喃葡萄糖胺(10)和硫代脲二糖II。 和2-氯乙胺盐酸盐在不同的反应条件下。