摘要:
Substituted quinolone derivatives represented by the following formula: ##STR1## wherein R.sup.1 represents a substituted or unsubstituted (hetero)aryl group, R.sup.2 represents H or an alkoxycarbonyl, substituted aminocarbonyl, cyano or like group, and R.sup.3 and R.sup.4 each independently represent H or a substituted alkyl, aryl, amino or like group, and salts thereof; pharmaceuticals containing the same. These derivatives and salts have excellent anti-ulcer activities.
摘要:
This invention relates to a 4-quinolinone derivative represented by the following general formula (1): ##STR1## wherein R.sup.1 and R.sup.2 mean individually H, halogen, cyano, or lower alkyl, lower alkylsulfonyl, lower alkylsulfinyl, lower alkylthio or lower alkoxy which may be substituted by halogen, or phenylsulfonyl, phenylsulfinyl or phenylthio which may have a substituent; and R.sup.3 and R.sup.4 denote individually H, lower alkyl or cycloalkyl which may be substituted by halogen, or pyridyl, furanyl or phenyl which may have a substituent, or R.sup.3 and R.sup.4 may form a 4-, 5- or 6-membered heterocyclic ring, or a salt thereof, and an intermediate useful for the preparation thereof, and besides a medicinal composition comprising this compound as an active ingredient. The compound (1) or the salt thereof has an excellent potassium channel-activating effect and is useful as, for example, a prophylactic and therapeutic agent for diseases of circulatory and bronchial systems.
摘要:
A 1,4-benzoxazine derivative represented by the following formula (1): ##STR1## wherein R.sup.1 represents an unsubstituted or halogen-substituted lower alkyl, unsubstituted or halogen-substituted lower alkylsulfonyl, nitro or cyano group, R.sup.2 and R.sup.3 may be the same or different and individually represent a hydrogen atom or a lower alkyl group or are fused together with the adjacent carbon atom into a 3- to 6-membered carbon ring, R.sup.4 represents a hydrogen atom or an unsubstituted or substituted lower alkyl or acyl group, R.sup.5 represents a hydrogen atom or a unsubstituted or substituted lower alkyl, lower alkenyl, lower alkoxyl, aryl, aryloxyl or heterocyclic ring group, and Y represents an oxygen or sulfur atom, with the proviso that R.sup.1 is other than a nitro or cyano group when R.sup.2 and R.sup.3 are individually a methyl group, R.sup.4 is a hydrogen atom, R.sup.5 is a 3-chloropropyl group and Y is an oxygen atom; or a salt thereof.