Thiophene systems. 9. Thienopyrimidinedione derivatives as potential antihypertensive agents
作者:Ronald K. Russell、Jeffery B. Press、Richard A. Rampulla、James J. McNally、Robert Falotico、Joan A. Keiser、David A. Bright、Alfonso Tobia
DOI:10.1021/jm00117a019
日期:1988.9
compounds were least potent. Neither alkylation nor acylation at the N-1 position improved the antihypertensive effects as compared to hydrogen. The three thienopyrimidine-2,4-diones (3-5) that contain a [(2-methoxyphenyl)piperazinyl]ethyl moiety at N-3 and hydrogen at N-1 were found to be potent oral antihypertensive agents in the SHR with doses (mg/kg, po) for reducing systolic blood pressure (SBP) by 50
A series of thieno[3,2-d]-, [3,4-d]- and [2,3-d]pyrimidinedione derivatives was prepared with N-3 substitution containing the side chains of ketanserin and ritanserin. The best of these thiophene analogues were the isosteres of ketanserin which were up to 20-fold more potent than the standards in 5-HT2 binding assays. More importantly, in addition to their increased potency, these derivatives were more selective than the standards in that they had less affinity for 5-HT1A and alpha-1 binding sites. This selectivity is especially noted as the ratio of alpha-1/5-HT2 wherein the most interesting thiophene isostere (2) in this study had a binding selectivity > 12-fold of ketanserin or ritanserin.
PRESS, JEFFREY B.;RUSSELL, RONALD K.
作者:PRESS, JEFFREY B.、RUSSELL, RONALD K.
DOI:——
日期:——
SUGIYAMA, MITSUO;SAKAMOTO, TOSHIAKI;TABATA, KEIICHI;ENDO, KAZUO;ITO, KEII+, CHEM. AND PHARM. BULL., 37,(1987) N, C. 2091-2102