| abstract |
NEW MATERIAL: The compounds of formula I, II [R 1 is 1-4C alkyl, 1-4C fluorinated or hydroxylated alkyl, phenyl 1-4C alkyl or the like; n is 0-2; R 2 and R 3 are heterocyclic groups comprising of 5-10 cyclic atoms together with C and N which can be bonded; R 4 is H, 1-8C alkyl, 2-8C alkoxy or the like; R 5 does not exist or is alkyl (having negative ions as pair ions), 0], its salts and predrug. n EXAMPLE: 8-phenyl-4,4-dimethyl5,6,10,11-tetrahydro-4H- pyrido[4',3';4.5]pyroro-[3,2,1-ij]-quinoline hydrochloride. n USE: Solvents of cellulose. n PROCESS: The compound of formula III is oxidized to obtain the objective compound. n COPYRIGHT: (C)1989,JPO |