Potential histamine H2-receptor blockers. 3- and 2-Indole derivatives as immobile analogs of tautomeric forms of cimetidine
作者:Haile Tecle、Lillian Robichaud、Charles F. Schwender
DOI:10.1021/jm00141a017
日期:1981.9
burimamide (1b) and metiamide (1c) exist mainly as an equilibrium mixture of tautomers. A high concentration of tautomer 2 is associated with increased H2-receptor interaction. 3-Indole derivatives (5c-f) and 2-indole derivatives (6c-f) were synthesized and tested as immobile analogues of tautomers 2 and 3, respectively. Weak competitive H2 antagonism was found in N'-cyano-N-[2-[(1H-indol-3-ylmethyl)thio]
在生理pH值下,西咪替丁(1a)及其类似物burimamide(1b)和metiamide(1c)主要作为互变异构体的平衡混合物存在。高浓度的互变异构体2与H2受体相互作用增加有关。合成3-吲哚衍生物(5c-f)和2-吲哚衍生物(6c-f),并分别测试为互变异构体2和3的固定类似物。在N'-氰基-N- [2-[(1H-吲哚-3-基甲基)硫代]乙基]氨基甲硫代甲酸甲酯(5e)和N- [2-[(1H-吲哚- 2-基甲基)硫代]-乙基] -N′-甲基硫脲(6c)。