Fifteen novel amiloride analogues were synthesized and their diuretic properties compared to amiloride and triamterene in white wistar rats. Whereas none of the 6‐substituted derivatives exhibited significant natriuretic and antikaliuretic effects, five of the compounds modified in the 2‐position were found equal or better than standards. The results are discussed with respect to chemical structure
Homolytic Acylation of Methyl 3-Amino-2-pyrazinecarboxylates
作者:W. Ried、Th. Russ
DOI:10.1055/s-1991-26521
日期:——
Homolytic acylation of methyl 3-amino-2-pyrazinecarboxylates 1a-c under standard Minisci conditions affords the corresponding 5- or 6-monoacylated pyrazines 3a-d or 4a,b in reasonable yields. With 1a, complete selectivity in favor of the 5-acyl products is observed.