作者:James L. Kelley、Ed W. Mclean、Robert M. Ferris、James L. Howard
DOI:10.1002/jhet.5570280444
日期:1991.6
A series of 6-substituted-9-(3-formamidobenzyl)purines were synthesized and studied for benzodiazepinereceptor (BZR) bindingactivity. Most of the target compounds were prepared by reaction of 6-chloro-9-(3-formamidobenzyl)-9H-purine (17) with the appropriate amine, alcohol or other nucleophilic reagent. Alternatively, the 6-cyclopropylaminopurine 5 was synthesized via the nitrobenzyl precursor 22