Synthesis and tuberculostatic activity of podands with a dihydropyrimidine fragment

A method for the preparation of 3-oxobutanoate-containing podands differing in the length of the polyether fragment by acetoacetylation of oligo(ethylene glycols) with 2,2,6-trimethyl-4H-1,3-dioxin-4-one upon heating in toluene was optimized. A multi-component Biginelli reaction was used for the formation of the dihydropyrimidine ring on the ether matrix obtained. Tuberculostatic activity of dihydropyrimidine podands in the in vitro experiments against a laboratory strain H37Rv was studied. A combination of dihydropyrimidine and podand fragments imparts tuberculostatic activity to the compounds obtained, which noticeably enhances with the increase in the oxyethylene spacer length.