Journal of heterocyclic chemistry

The synthesis of ring??expanded analogues of xanthine containing the imidazo [4, 5??e][1, 4] diazepine ring system

RS Hosmane, A Bhan

文献索引：Journal of Heterocyclic Chemistry, , vol. 27, # 7 p. 2189 - 2196

全文：HTML全文

被引用次数: 21

摘要

... synthesis of ring-expanded analogues of xanthine, guanine, and hypoxanthine, bearing the title heterocyclic ring system [1 ... In view of a number of alleged seven-membered ring heterocycles whose struc- tures were ... g (76%), mp 221-223°; 'H nmr (DMSO-d6): S 9.21 (t, J = 4.5 Hz ...