RESUMEN
Several 6-substituted-amino-5'-deoxy-5'-amino-clitocine analogues were synthesized in a parallel fashion in solid phase. The desired scaffold was generated by coupling 2,3-O-bis-(t-butyldimethylsilyl)-5-N-(monomethoxytrityl-polystyrene-resin)-1,5-diamino-5-deoxy-beta-D-ribofuranose and 4, 6-dichloro-5-nitropyrimidine. The scaffold was then reacted with a variety of amines to generate a small library of 14 analogues of 5'-deoxy-5'-amino-clitocine following a protocol developed earlier.
Asunto(s)
Nucleósidos de Pirimidina/química , Nucleósidos de Pirimidina/síntesis química , Estructura MolecularRESUMEN
Several thiazolone-based sulfonamides were prepared, utilizing various hetero-aryl sulfonyl chlorides and different aldehydes, as inhibitors of NS5B polymerase, to target HCV. The best compound showed 0.6 microM [corrected] of IC50 inhibitory activity.
Asunto(s)
Antivirales/síntesis química , Antivirales/farmacología , Inhibidores Enzimáticos/síntesis química , Inhibidores Enzimáticos/farmacología , Sulfonamidas/síntesis química , Sulfonamidas/farmacología , Tiazoles/síntesis química , Tiazoles/farmacología , Proteínas no Estructurales Virales/antagonistas & inhibidores , Indicadores y Reactivos , Relación Estructura-ActividadRESUMEN
Several Toyocamycin (4) analogues were examined for their ability to inhibit HCV RNA in a replicon assay. Among the compounds examined 4-methylthio (18) and 5-carboxamide oxime derivatives (23 and 27) of Toyocamycin were found to have good activity and selectivity.
Asunto(s)
Antivirales/síntesis química , Toyocamicina/síntesis química , Antivirales/farmacología , Hepatitis C/tratamiento farmacológico , Hepatitis C/metabolismo , Hepatitis C/virología , Humanos , Espectroscopía de Resonancia Magnética , Estructura Molecular , Nucleósidos de Pirimidina/química , Pirimidinas/química , Pirroles/química , ARN Polimerasa Dependiente del ARN/antagonistas & inhibidores , ARN Polimerasa Dependiente del ARN/metabolismo , Toyocamicina/análogos & derivados , Toyocamicina/farmacología , Proteínas no Estructurales Virales/antagonistas & inhibidores , Proteínas no Estructurales Virales/metabolismoRESUMEN
The development of potent, orally bioavailable, and selective series of 5-amino-3-hydroxy-N(1-hydroxypropane-2-yl)isothiazole-4-carboxamidine inhibitors of MEK1 and MEK-2 kinase is described. Optimization of the carboxamidine and the phenoxyaniline group led to the identification of 55 which gave good potency as in vitro MEK1 inhibitors, and good oral exposure in rat.
Asunto(s)
Amidinas/farmacología , MAP Quinasa Quinasa 1/antagonistas & inhibidores , Regulación Alostérica , Amidinas/síntesis química , Amidinas/química , Animales , MAP Quinasa Quinasa 2/antagonistas & inhibidores , RatasRESUMEN
3-Hydroxy-4-carboxyalkylamidino-5-arylamino-isothiazoles were discovered as potent in vitro MEK1 inhibitors.