RESUMEN
A series of [(6,7-dichlorobenzo[b]thien-5-yl)oxy]acetic acids and their corresponding 1,1-dioxides were synthesized and evaluated for diuretic activity in the acute saline loaded mice (ASLM) and hypotensive activity in the spontaneously hypertensive rat (SHR). A significant number of compounds were found to display potent activity in one or both assays, and preliminary structure-activity relationships with respect to each assay were delineated. Compound 94, the 1,1-dioxide of [(6,7-dichloro-2-n-propylbenzo[b]thien-5-yl)oxy]acetic acid was markedly active in both the ASLM and SHR by oral administration. The combined diuretic/hypotensive profile of this compound was further substantiated by its good saluretic response in water loaded conscious dogs and a moderate to good activity in renal hypertensive rats and sinoaortic-deafferented hypertensive dogs.
Asunto(s)
Antihipertensivos/síntesis química , Diuréticos/síntesis química , Glicolatos/síntesis química , Tiofenos/síntesis química , Acetatos/síntesis química , Acetatos/farmacología , Animales , Antihipertensivos/farmacología , Diuréticos/farmacología , Perros , Femenino , Glicolatos/farmacología , Masculino , Ratones , Ratas , Ratas Endogámicas SHR , Ratas Endogámicas , Relación Estructura-Actividad , Tiofenos/farmacologíaRESUMEN
A series of 2,3-dihydro-3-(1-pyrryl)spiro[benzofuran-2,4'-piperidine]s (IV) and 2,3-dihydro-3-(1-pyrryl)spiro[benzofuran-2,3'-pyrrolidine]s (V) was synthesized and evaluated for cardiovascular activity. The majority of the compounds displayed good antihypertensive activity in the spontaneous hypertensive rat model at 50 mg/kg po. Compounds 5 (2,3-dihydro-1'-methyl-3-(1-pyrryl)spiro[benzofuran-2,4'-piperidine] ) and 12a (2,3-dihydro-1'-ethyl-3-(1-pyrryl)-spiro[benzofuran-2,4'-piperidine] ) were selected for a more detailed cardiovascular evaluation in the renal hypertensive rat and for standard cardiovascular challenges in anesthetized dogs and the sinoaortic-deafferented dog.
Asunto(s)
Antihipertensivos/síntesis química , Benzofuranos/síntesis química , Presión Sanguínea/efectos de los fármacos , Hipertensión/tratamiento farmacológico , Animales , Benzofuranos/uso terapéutico , Perros , Evaluación Preclínica de Medicamentos , Femenino , Frecuencia Cardíaca/efectos de los fármacos , Indicadores y Reactivos , Masculino , Ratas , Ratas Endogámicas , Relación Estructura-ActividadRESUMEN
4-(Dimethylamino)- and 4-(methylamino)-3'-arylspiro[cyclohexane-1,1'(3'H)-isobenzofuran] derivatives were prepared as analogues of previously reported 3-arylspiro[isobenzofuran-1(3H),4'-piperidines]. Metalation of benzanilide with n-butyllithium, addition of 4-(dimethylamino)cyclohexanone, and acidification afforded a mixture of cis- and trans-4-(dimethylamino)spiro[cyclohexane-1,1'(3'H)-isobenzofuran]-3'-ones (1a,b), which were separated by fractional crystallization. Addition of aryllithium or aryl Grignard reagents to 1a,b and formic acid reduction afforded cis- and trans-4-(dimethylamino)-3'-arylspiro[cyclohexane-1,1'(3'H)-isobenzofurans] 3a-f, which were converted to secondary amine analogues 5a-e. Tentative stereochemical assignments are based on chemical arguments and are supported by 13C NMR chemical shift data. Marked inhibition of tetrabenazine-induced ptosis is a property of most antidepressants, and significant antitetrabenazine activity is observed for several of these compounds. Optimal antitetrabenazine activity is associated with the cis-3'-phenyl series, and the cis secondary amine 5a is approximately twice as potent as the cis tertiary amine 3a. The various compounds are relatively weak with respect to potentiation of L-5-hydroxytryptophan-induced seizures.
Asunto(s)
Antidepresivos/síntesis química , Compuestos de Espiro/síntesis química , Animales , Benzofuranos/síntesis química , Benzofuranos/farmacología , Fenómenos Químicos , Química , Sinergismo Farmacológico , Espectroscopía de Resonancia Magnética , Masculino , Ratas , Convulsiones/inducido químicamente , Compuestos de Espiro/farmacología , Estereoisomerismo , Tetrabenazina/antagonistas & inhibidoresRESUMEN
Fendosal (HP 129) is one of a series of potent non-steroidal anti-inflammatory agents. Fendosal was compared with aspirin in several anti-inflammatory and analgesic bioassay procedures. Results indicate that fendosal has an anti-inflammatory activity 1.4 times greater than does aspirin in carrageenan-induced rat paw edema. Fendosal is 6.9 to 9.5 times more active than aspirin in the prophylactic and therapeutic adjuvant-induced polyarthritis models of chronic inflammation. The analgesic activity of fendosal is considered to be superior to that of aspirin, with the advantage of a prolonged duration of action. The gastric-irritating properties of fendosal are very low in comparison with those of aspirin. Fendosal has a much wider separation of effective and gastric-irritating doses than does aspirin.
Asunto(s)
Antiinflamatorios no Esteroideos , Hidroxibenzoatos , Animales , Artritis Experimental/fisiopatología , Edema/fisiopatología , Femenino , Granuloma/fisiopatología , Indoles , Ratas , SalicilatosRESUMEN
An extensive series of carboxyarylindoles has been evaluated for antiinflammatory activity in the carrageenin paw edema assay. The requirements for optimal antiinflammatory activity in this series are relatively specific: a central pyrrole nucleus with (a) a 3-carboxy-4-hydroxyphenyl moiety substituted directly on the nitrogen, (b) a 2-phenyl group (R2) with a substituent of low electronegativity, (c) absence of a substituent in the 3 position (R3), and (d) a system fused across the 4,5 positions (X), which is lipophilic, quasiplanar, and does not interact sterically with the N-phenyl group. One derivative, 3-(3-carboxy-4-hydroxyphenyl)-2-phenyl-4,5-dihydro-3H-benz[e]indole (42), has been selected for further study.