Novel benzazepines and related heterocyclic derivatives which are useful as orexin receptor antagonists
申请人:——
公开号:US20040058912A1
公开(公告)日:2004-03-25
The invention relates to novel benzazepines and related heterocyclic derivatives (I) and their use as active ingredients in the preparation of pharmaceutical compositions. The invention also concerns related aspects including processes for the preparation of the compounds, pharmaceutical compositions containing one or more of those compounds and especially their use as orexin receptor antagonists.
Formation of imidazopyridines by the phase transfer catalyzed reaction of .alpha.-(aminomethyl)pyridines and CHCl3 with alkaline hydroxide
作者:Kevin C. Langry
DOI:10.1021/jo00007a028
日期:1991.3
The reaction of chloroform with 2-(aminomethyl)pyridine (1) under basic phase-transfer catalysis affords the highly fluorescent imidazo[1,5-alpha]pyridine (2) in 25% isolated yield. Despite the formation of considerable tarry residue, GC-MS indicates that the volatile fraction of the reaction is simple and consists of 2 and two minor residue, GC-MS indicates that the volatile fraction of the reaction is simple and consists of 2 and two minor components identified as N-(2-pyridylmethyl)formamide (6) and (2-pyridylmethyl)isonitrile (7). The basic phase transfer catalyzed reaction of chloroform with a series of alpha-(aminomethyl)azanaphthalenes was found to be general and yield the corresponding annulated imidazo derivaties in comparable yields. Despite product yields in the 25% range, GC of the reaction mixtures indicates that the volatile fractions generally consist of residual starting aminomethyl compound, the imidazo product, and a minor amount of the (alpha-azanaphthylmethyl)formamide. However, 3-(aminomethyl)isoquinoline (18) failed to provide any of the expected imidazo[1,5-b]isoquinoline (19). The failure to detect 19 was investigated.
Yousif, M. Mohammed; Saeki, S.; Hamana, M., Journal of Heterocyclic Chemistry, 1980, vol. 17, p. 1029 - 1034
作者:Yousif, M. Mohammed、Saeki, S.、Hamana, M.
DOI:——
日期:——
Langry, Kevin C., Organic Preparations and Procedures International, 1994, vol. 26, # 4, p. 429 - 438