| Abstrakt: |
2-Hydrazinyltetrahydropyrimido [4, 5-b] quinolin-4(3H)-one ( 3) was prepared by desulfurization reaction of S- and N-dimethyl derivatives 2 with hydrazine hydrate. Reactions of ( 3) with malonitrile, carbondisulfide, potassium thiocyanate, phthalic anhydride and aromatic aldehydes afforded 3, 5-di aminopyrazolopyrimido [4, 5-b] quinoline ( 4), triazolotetrahydropyrimido [4, 5-b] quinoline ( 5), aminotriazolopyrimido [4, 5-b] quinoline ( 6), aminophthalimidopyrimido [4, 5-b] quinoline ( 7) and N-arylidene hydrazinepyrimido [4, 5-b] quinoline 8a-d, respectively. Furthermore, 8a-d reacted with mercaptoacetic acid gave the thiazolidinonepyrimido [4, 5-b] quinoline 9a-d, which afforded the thiazolotriazolopyrimido [4, 5-b] quinolinone 10a-d upon treatment with ethanolic potassium hydroxide. The newly synthesized compounds were characterized by elemental analyses, IR, 1H-NMR, 13C-NMR and mass spectrometer. The investigated compounds were screened for their cytotoxicity. Compounds 4, 6 and 5 exhibited potent antitumor activity. [ABSTRACT FROM AUTHOR] |
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