Synthesis and structure-activity relationships of a series of anxioselective pyrazolopyridine ester and amide anxiolytic agents
作者:Thomas M. Bare、Charles D. McLaren、James B. Campbell、Judy W. Firor、James F. Resch、Claudia P. Walters、Andre I. Salama、Brad A. Meiners、Jitendra B. Patel
DOI:10.1021/jm00132a011
日期:1989.12
A series of 1-substituted 4-amino-1H-pyrazolo[3,4-b]pyridine-5-carboxylic acid esters and amides were synthesized and screened for anxiolytic activity in the shock-induced suppression of drinking (SSD) test. The compounds were also tested for their ability to displace [3H]flunitrazepam (FLU) from brain benzodiazepine (BZ) binding sites. Many compounds were active in these screens and, additionally
Synthesis of 3-bromo-2-pyrones and their reactions with bases
作者:T. L. Gilchrist、C. W. Rees
DOI:10.1039/j39680000769
日期:——
The synthesis of α-pyrones related to isodehydracetic acid (2,4-dimethyl-6-oxopyran-3-carboxylic acid), their bromination, and the reaction of the bromo-compounds with bases have been reinvestigated and extended. The sodium-catalysed condensation of β-keto-esters and related compounds with acetyenic esters provides a satisfactory general method for synthesis of the α-pyrones. The reactions of the bromo-pyrones