Verfahren zur Herstellung von Benzodiazepinen und ihren Salzen

摘要

1299801 Benzodiazepines SUMITOMO CHEMICAL CO Ltd 20 Jan 1970 [25 Jan 1969(3) 18 April 1969 13 May 1969 9 June 1969] 2767/70 Heading C2C Benzodiazepine derivatives are prepared by the following route (R 1,2 = H, halogen, C 1-4 alkyl or alkoxy, trihalomethyl, NO 2 amino; R 3,4 =H, C 1-4 alkyl; A=CO, CH 2 ; n=0-2), optionally followed by salt formation. The 1-oxamoylbenzodiazepine derivatives are tranquilisers, muscle relaxants, antispasmodics and hypnotics, and may be administered in the form of pharmaceutical preparations containing them in association with a carrier.