3-AMINO-2-QUINOXALINECARBONITRILE - NEW FUSED QUINOXALINES WITH POTENTIAL CYTOTOXIC ACTIVITY
3-AMINO-2-QUINOXALINECARBONITRILE - NEW FUSED QUINOXALINES WITH POTENTIAL CYTOTOXIC ACTIVITY
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DOI:
10.1002/jhet.5570310506
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发表时间:
1994-09-01
影响因子:
2.4
通讯作者:
BARKER, AJ
中科院分区:
文献类型:
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作者:
MONGE, A;PALOP, JA;BARKER, AJ
Starting with 3-amino-2-quinoxalinecarbonitrile 1,4-dioxide 1, a new series of quinoxaline derivatives was prepared through chemical modifications of the 2-cyano and 3-amino groups. Nitration of 3-amino-2-quinoxalinecarbonitrile 3 afforded the 7-nitro derivative 6. Diazotation of 3 gave the 3-chloro compound 9. 2,3-Quinoxalinedicarbonitrile 14 was obtained from 9. Pyridazino[4,5-b]quinoxalines 15 and 16 were prepared by condensing 14 with hydrazine hydrate. A triazolo[4,5-b]quinoxaline 18, a isothiazolo[4,5-b]quinoxaline 20 and two pyrazolo[3,4-b]quinoxalines 21 and 22 were identified. Compounds were tested as cytotoxic agents both in oxic and in hypoxic cells.