Synthesis of a number of pyrimido(4,5-d)pyrimidines by four independent routes is reported. The first involves the cyclization of substituted 4-aminopyrimidine-5-thiocarboxamides by the action of ethyl orthoformate and ...
The macroscopic and microscopic characters of the leaf and root of Vite» negundo Linn., a commercial drug used in indigenous medicine in India, have
been described.
Some potential amoebicidal agents, viz. 3-alkyl-(and aryl)-2-styryl-8-hydroxy-(and 8-methoxy)-4-quinazolones have been synthesized,by condensing 3-alkyl-2-methyl-8-methoxy-4-quinazolones with excess of aromatic aldehydes ...