Abstract:
The synthesis of six compounds with the structure of 4-C-glycosyl-5-ethoxy (or methoxy)
carbonyl-1,2,3,4-tetrahydro-6-methyl-2-oxopyrimidines, with a polyhydroxylated or anhydropolyhydroxilated chain
(C-glycosides), is accomplished by Biginelli reaction, using methyl or ethyl acetoacetisc ester as dicarbonyl compound
together with cyclic or acyclic derivatives of aldehydo-pentoses.