Hydroxyimino and alkoxyimino derivatives of 1,4-dihydropyridine and anti-hypertensive compositions

US4508719A · kind A · utility

Assignee

• Pierrel SpA · IT

Inventors

• Silvia Z. Tricerri · Cantù, IT
• Cesare Casagrande · Arese, IT
• Franco De Marchi · Milano, IT
• Massimo Nicola · Pavia, IT

Key dates

• Filing date: May 26, 1983
• Grant date: Apr 2, 1985
• Expiry date: May 26, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D211/90
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Compounds of formula I: ##STR1## are described in which R.sup.1 is a linear or branched alkyl radical containing between 1 and 5 carbon atoms, the alkyl radical being unsubstituted or substituted by an alkoxy group; R.sup.2 is an unsubstituted phenyl of phenyl substituted by a nitro group; R.sup.3 is hydrogen or a linear or branched alkyl residue containing between 1 and 4 carbon atoms, the alkyl radical being unsubstituted or substituted by at least one alkoxy or fluorine atom or both alkoxy and fluorine atoms; R.sup.4 is hydrogen or a linear or branched alkyl containing between 1 and 4 carbon atoms, the alkyl radical being unsubstituted or substituted by alkoxy, carbalkoxy, dialkylamino, 1-aryl or 1-heteroarylpiperazinyl, aryl or a monocyclic 5 or 6 membered heterocycle in which at least one of the heteroatoms is N,O,S such as 1-piperidinyl, 4-morpholinyl or R.sub.4 is alkenyl or cyclo(C.sub.3 -C.sub.6)alkyl; and enantiomers, racemates, diastereoisomers and isomers (E) and (Z) and their salts with pharmaceutically acceptable acids. The novel compounds exhibit calcium-antagonistic activity.