| abstract |
NEW MATERIAL:A compound shown by the formula I (R1 is CH3 or methoxymethyl; R2 and R3 are H, lower alkyl, lower alkoxy, cyclohexyl, phenyl, pyridyl, etc.) and its salt. EXAMPLE:4-Cyano-2,3,5,6,7,8-hexahydro-1-methyl-3-oxo-7-(4-pyridyl) isoquinoline. USE:A cardiac. PREPARATION:A compound shown by the formula II is condensed with bromopyridine in the presence of n-butyllithium, etc. to give a compound shown by the formula III, which is dehydrated, then reduced with hydrogen in a mineral acid to give a compound shown by the formula IV, which is acylated and condensed with a cyanoacetamide in the presence of piperidine, etc., in an alcohol to give a compound shown by the formula I wherein one of R<2> and R<3> is pyridyl. |