Synthesis of carbasugar-containing non-glycosidically linked pseudodisaccharides and higher pseudooligosaccharides
作者:Ian Cumpstey
DOI:10.1016/j.carres.2009.09.008
日期:2009.11
This minireview covers synthetic methods towards carbasugar-containing non-glycosidicallylinked pseudodisaccharides or higher pseudooligosaccharides. Carbocyclic pyranose mimetics (saturated or unsaturated between C-5 and C-5a) are linked by ether, thioether or amine bridges to carbohydrates or other carbasugars.
Synthesis of carbocyclic analogues of the mannosyl trisaccharide: ether- and imino-linked methyl 3,6-bis(5a-carba-α-d-mannopyranosyl)-3,6-dideoxy-α-d-mannopyranosides
Carbocyclicanalogues 2 and 3 of the "trimannosyl structure 1", methyl3,6-bis(5a-carba-alpha-D-mannopyranosyl)-3,6-dideoxy-alpha-D-ma nnopyranosides bonded by way of respective ether and imino linkages, were synthesized. The ether 2 had no inhibitory activity against alpha-D-mannosidase; in contrast, the imino compound 3 was a mild inhibitor. Furthermore, the inhibitory activity of 4, related to 3