Fig. 25.

Antibacterial Mannich bases derived from 2,3-dihydro-1,2,4-triazole-3-ones, 2,3-dihydro-1,3,4-oxadiazole-3-ones, and 2,3-dihydro-1,3,4-thiadiazole-3-thiones.

Antibacterial Mannich bases derived from 2,3-dihydro-1,2,4-triazole-3-ones, 2,3-dihydro-1,3,4-oxadiazole-3-ones, and 2,3-dihydro-1,3,4-thiadiazole-3-thiones.