| abstract |
A 1-substituted-3-permissibly- substituted-6-oxodecahydroquinoline is converted to the corresponding 7- formyl derivative and then, upon treatment with hydrazine, may be cyclized to a tautomeric mixture of 5-substituted-7- permissibly-substituted- 4,4a,5,6,7,8,8a,9-octahydro-1H(and 2H)- pyrazolo[3,4-g]quinolines. The 7-formyl derivative of the formula <IMAGE> wherein R is C1-C3 alkyl, allyl or benzyl and R' is H or COOZ' and Z' is C1-C2 alkyl, benzyl, alpha methylbenzyl or phenylethyl is novel. |