Abstract Triphenylmethylium perchlorate-catalyzed glycosylation of 2-, 3- and 5-trityl ethers of methyl β- d -ribofuranoside by 1,2- O -cyanoethylidene derivatives of d -ribofuranose gave good yields of the corresponding 1,2- trans -linked disaccharide derivatives. The structural assignments of the deprotected disaccharides were confirmed by 1 H-n.m.r.- and 13 C-n.m.r. spectroscopy.
摘要
高氯酸三苯基甲基
钾催化β-d-
呋喃呋喃糖的1,2-O-
氰基亚乙基衍
生物对甲基β-d-
呋喃呋喃糖苷的2-,3-和5-三苯甲基醚的糖基化反应产生了相应的1,2-反式-交联的良好收率二糖衍
生物。通过1 Hn.mr-和13 Cn.mr光谱确认了脱保护的二糖的结构分配。