Geh. Elgemeie et Baw. Hussain, A CONVENIENT SYNTHESIS OF 5-DEAZA NONCLASSICAL ANTIFOLATES - REACTIONOF CYANOTHIOACETAMIDE WITH SODIUM-SALTS OF 2-(HYDROXYMETHYLENE)-1-CYCLOALKANONES, Tetrahedron, 50(1), 1994, pp. 199-204
Condensation of cyanothioacetamide with sodium salts of 2-(Hydroxymeth
ylene)-1-cycloalkanones afforded the corresponding pyridine-2(1H)-thio
nes 4. Compounds 4 served as a key intermediates for the synthesis of
condensed 2,4-diaminopyrido[2,3-d]pyridines 7. Compounds 7 were of int
erest as potential inhibitors of dihydrofolate reductase.