Syntheses, antitumor activity and vascular relaxing effet of purino(7,8-g)-6-azapteridines and (1,2,4)triazino(3,2-f)purines.
作者:TAISEI UEDA、TSUNEYASU ADACHI、JINSAKU SAKAKIBARA、MASAHISA ASANO、JOZI NAKAGAMI
DOI:10.1248/cpb.35.4031
日期:——
Novel heterocycles, purino [7, 8-g] -6-azapteridines and [1, 2, 4] triazino [3, 2-f] purines, were synthesized and their biological activities were examined. Heating of 7, 8-diamino-1, 3-dimethylxanthine (2), which was obtained by the reaction of 8-aminotheophylline with hydroxylamine-Ο-sulfonic acid, with hydrochloric acid gave 2, 4, 7, 9-tetramethylpurino [7, 8-g] -6-azapteridine-1, 3, 8, 10 (2H, 4H, 7H, 9H) -tetrone (4) in 96% yield; this product was identical with the compound obtained by the reaction of 2 with alloxan followed by methylation. Treatment of 4 with alkylamines gave 3-alkylamino-2-alkylcarbamoyl-6, 8-dimethyl [1, 2, 4] triazino [3, 2-f] purine-7, 8 (6H, 8H) -diones (10a-g) in 63-95% yields. Compound 4 was active against P 388 leukemia. Vascular relaxing effects of some of the triazino [3, 2-f] purines (10a, b, e, f) were examined, but none showed potent activity.
合成了新型杂环化合物,即purino [7, 8-g] -6-氮杂吡啶和[1, 2, 4]三嗪 [3, 2-f] 嘌呤,并对其生物活性进行了研究。通过将7, 8-二氨基-1, 3-二甲基黄嘌呤(2)与盐酸反应,获得了96%产率的2, 4, 7, 9-四甲基purino [7, 8-g] -6-氮杂吡啶-1, 3, 8, 10 (2H, 4H, 7H, 9H) -四酮(4);该产物与2与氨甲酰胺反应后再进行甲基化所得的化合物相同。将化合物4与烷基胺反应,得到了3-烷基氨基-2-烷基氨基-6, 8-二甲基[1, 2, 4]三嗪[3, 2-f]嘌呤-7, 8 (6H, 8H)-二酮(10a-g),产率为63-95%。化合物4对P 388白血病具有活性。对一些三嗪[3, 2-f]嘌呤(10a, b, e, f)的血管舒张效应进行了研究,但均未显示出强效活性。