Carbohydrate Research p. 33 - 45 (1990)
Update date:2022-08-04
Topics:
Bock, Klaus
Hvidt, Torsten
Marino-Albernas, J.
Verez-Bencomo, Vincente
The 1H- and 13C-n.m.r. spectra of allyl 2-O-<4-O-(3,6-di-O-methyl-β-D-glucopyranosyl)-2,3-di-O-methyl-α-L-rhamnopyranosyl>-3-O-methyl-α-L-rhamnopyranoside (3), a glycoside of the terminal trisaccharide found in the phenolic glycolipid I from Mycobacterium leprae, and those of the two component disaccharides, allyl 4-O-(3,6-di-O-methyl-β-D-glucopyranosyl)-2,3-di-O-methyl-α-L-rhamnopyranoside (1) and allyl 2-O-(2,3-di-O-methyl-α-L-rhamnopyranosyl)-3-O-methyl-α-L-rhamnopyranoside (2) have been assigned completely by 1D and 2D techniques.The preferred conformations, determined by chemical shift and n.O.e. studies, were different in D2O, CD3OD, and CDCl3.The preferred conformation of 3 accorded with the results of hard-sphere exo-anomeric (HSEA) calculations.
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