2-(2-Phenoxyphenylimino) imidazolidine and related compounds (IV and XII) were synthesized and evaluated for hypotensive activity in rats. Most of the 2-aryliminoimidazolidines (IV) were synthesized via the aniline derivatives (VI) by two different methods. Some imidazolidines (IV) were found to be significantly active, with 2-(5-chloro-2-phenoxyphenylimino) imidazolidine (IV-19) being more active than prazosin, the reference compound. The mechanism of action of IV-9 may involve the blockade of peripheral α-adrenergic receptors. This paper describes the synthesis, pharmacology, and structure-activity relationships of the 2-(2-phenoxyphenylimino) imidazolidines.
Partial Reduction of Dinitroarenes to Nitroanilines with Hydrazine Hydrate
作者:Nagaraj R. Ayyangar、Uttam R. Kalkote、Ananda G. Lugade、Pandurang V. Nikrad、Vasant K. Sharma
DOI:10.1246/bcsj.56.3159
日期:1983.10
such as hydroxyl and amine groups could be conveniently reduced with 3 molar equivalents of hydrazinehydrate in presence of Raneynickelcatalyst in ethanol/1,2-dichloroethane solvent mixture to give a product wherein one of the two nitro groups was reduced to the amino group. The yields of the partial reduction products are good. Under similar conditions alkoxyl substituents in the o,p-position to the