Chemical synthesis of l-iduronic acid-containing disaccharidic fragments of heparin
作者:Taku Chiba、Jean-Claude Jacquinet、Pierre Sinaÿ、Maurice Petitou、Jean Choay
DOI:10.1016/0008-6215(88)85095-x
日期:1988.3
Abstract Condensation of methyl 3- O -benzyl-2-benzyloxycarbonylamino-6- O -chloro-acetyl-2-deoxy-α- d -glucopyranoside with methyl (2,3,4-tri- O -acetyl-α- l -idopyranosyl bromide)uronate in 1,2-dichloroethane, in the presence of silver triflate and molecular sieves, provided 83% of crystalline methyl 3- O -benzyl-2-benzyloxy-carbonylamino-6- O -chloroacetyl-2-deoxy-4- O -(methyl 2,3,4-tri- O -acetyl-α-
摘要甲基3-O-苄基-2-苄氧基羰基氨基-6-O-氯-乙酰基-2-脱氧-α-d-吡喃葡萄糖苷与甲基(2,3,4-三-O-乙酰基-α-l-在三氟甲磺酸银和分子筛的存在下,在1,2-二氯乙烷中的亚吡喃基溴基)尿酸酯提供了83%的结晶甲基3-O-苄基-2-苄氧基-羰基氨基-6-O-氯乙酰基-2-脱氧-4 -O-(2,3,4-甲基-O-乙酰基-α-1-基吡喃葡萄糖基尿酸甲酯)-α-d-吡喃葡萄糖苷。脱氯乙酰化,然后依次用三氧化硫-三甲胺络合物进行O-硫酸化,乙酰化和皂化,得到甲基2-乙酰氨基-2-脱氧-4-O-(α-1-L-吡喃基吡喃糖基糖醛酸)-6-O-的二钠盐。磺基-α-d-吡喃葡萄糖苷。还合成了该二糖的N-硫酸化类似物,乙酰化被选择性的N-硫酸化代替。(2,3-二-O-苄基-β-1-吡喃葡萄糖苷)尿酸甲酯与6-O-乙酰基-2-叠氮基-3,4-二-O-苄基-2-脱氧-α-d的缩合-氟吡喃糖基溴在二氯甲烷中,在三氟甲磺酸银和2