Synthesis of 2-Substituted Polyhydroxytetrahydropyrimidines (<i>N</i>-Hydroxy Cyclic Guanidino-Sugars): Transition-State Mimics of Enzymatic Glycosidic Cleavage
作者:Van-Duc Le、Chi-Huey Wong
DOI:10.1021/jo9915574
日期:2000.4.1
The synthesis of 2'-substituted polyhydroxytetrahydropyrimidines as transition-state mimics of enzymatic glycosidic cleavage has been achieved by using guanylation and cyclization methodologies. The D-galacto type N-hydroxy cyclic guanidino-sugar 21 was synthesized in six steps from amine 7 and thiourea 14 in an overall yield of 59%. To further derivatize compound 21 to incorporate the leaving group