Synthesis of 5-aminopentyl 4,6-O-[(R)-1-carboxyethylidene]-β-d-galactopyranoside and its use as a ligand for the affinity chromatography of human serum amyloid P protein
作者:Thomas Ziegler、Elisabeth Eckhardt、Jochen Strayle、Helmut Herzog
DOI:10.1016/0008-6215(94)80063-4
日期:1994.2
corresponding protected beta-D-galactoside 27, deblocking of which afforded the title compound 1. Binding of 1 to epoxypropyl-modified acrylamide beads gave an affinity adsorbent that was used to isolate serum amyloid P protein from human serum.
一系列2,3-二-O-苯甲酰基-D-吡喃半乳糖苷,α-烯丙基(5),α-苄基(6),β-乙基-1-硫代(7),β-苯基-1-硫代(由相应的4,6-O-亚苄基衍生物制备8)和α-甲基(9),并用丙酮酸甲酯在乙腈中缩醛化,以非对映选择性得到2,3-二-O-苯甲酰基-4,6。 -O-[(R)-1-甲氧基羰基亚乙基] -D-吡喃半乳糖苷10-16。将后者转化为2,3-二-O-苯甲酰基-4,6-O-[(R)-1-甲氧基羰基亚乙基] -D-半乳糖吡喃糖基α-和β-三氯乙亚氨酸酯19和20,α-和β -氟化物21和22,α-溴化物23和α-氯化物24。这些供体(包括苯基1-硫代半乳糖苷14)与5-[(苄氧基羰基)氨基]戊醇反应,得到相应的受保护的β-D-半乳糖苷27,