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- W2078188790 abstract "Abstract Reaction of 8-amino-7-(2 furyl)-5,6-dihydrobenzo[h]thieno[2,3-b]quinoline-9-carbonitrile (3a) with phenyl isothiocyanate, triethyl orthoformate, ethylenediamine and/or sodium azide afforded benzo[h]thieno[2,3-b]quinolines 4,7,20 and 25 respectively. Cyclization of thiourea derivative 4 furnished thioxopyrimidine derivative 5. The dithioxopyrimidine 6 was prepared by reaction of 3a with carbon disulfide. On treatment of 7 with hydrazine hydrate, 10-amino-7-(2-furyl)-11-imino-5,6,10,11-tetrahydrobenzo[h]pyrimido[4′,5′:4,5]thieno [2,3-b]quinoline (8) was obtained. Compounds 8,20 and 25 were used as key intermediates in the synthesis of the fused hexacyclic compounds 9–19, 21–24 and 26–28 respectively. 8-Amino-7-(2-furyl)-5,6-dihydrobenzo[h]thieno[2,3-b]quinoline-9-carboxamide (3b) was reacted with some reagents, namely triethyl orthoformate, benzaldehyde, carbon disulfide, phenyl isothiocyanate, and/or acetic anhydride to give the corresponding benzo[h]pyrimido [4′,5′: 4,5]thieno[2,3-b]quinolines 29, 30, 31, 32 and 34. Compound 29 underwent some sequence reactions to give 37–42. Some of the prepared compounds were tested in vitro for their antibacterial and antifungal activities." @default.
- W2078188790 created "2016-06-24" @default.
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- W2078188790 date "2000-04-01" @default.
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- W2078188790 title "BENZOQUINOLINES II. SYNTHESIS OF SOME NEW BENZO[h] PYRIMIDO [4′,5′:4,5]THIENO[2,3-b]QUINOLINE DERIVATIVES AND RELATED FUSED HEXACYCLIC SYSTEMS" @default.
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- W2078188790 doi "https://doi.org/10.1080/10426500008043660" @default.
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