Design and synthesis of a trisubstrate analogue for α(1→3)fucosyltransferase: A potential inhibitor
作者:B.M. Heskamp、G.H. Veeneman、G.A.van der Marel、C.A.A. van Boeckel、J.H. van Boom
DOI:10.1016/0040-4020(95)00451-d
日期:1995.7
Phenyl 1-azido-3,4,5-tri-O-benzyl-I-deoxy-2-seleno-α-l-fuco-heptulopyranoside (5), readily accessible from perbenzylated l-fucono-1,5-lactone, is a key intermediate in the preparation of trisubstrate analogue 2. NIS mediated condensation of fucosyl donor 5 with methyl 2,4,6-tri-O-benzyl-α-d-glucopyranoside (7) and ensuing reduction of the azido function furnished ketodisaccharide 10b, which was elongated
苯基1-叠氮基3,4,5-三-O-苄基-I-脱氧-2-硒基-α-1-fuco-七吡喃吡喃糖苷(5),可从过苄基的1-fucono-1,5-内酯轻松获得,是制备三基质类似物2的关键中间体。NIS介导的岩藻糖基供体5与甲基2,4,6-三-O-苄基-α-d-吡喃葡萄糖苷(7)缩合,并随后降低了叠氮基官能团,提供了酮二糖10b,后者在1-氨基处被延长。带有丙二酸间隔基的岩藻糖残基。将如此获得的化合物脱保护,然后与5'-氨基-5'-脱氧-鸟苷偶联,得到目标化合物2。