NEW MATERIAL:The compound of formula I (R1 is lower alkyl; R2 is H, lower alkyl, or lower alkanoyl; R3 is lower alkyl; X is halogen; n is 1 or 2).
EXAMPLE: 9- ( 3-Methylamino-1-pyrrolidinyl ) -8-fluoro-2-methyl-1, 2-dihydro-6-oxo- pyrrolo[3,2,1-ij]quinoline-5-carboxylic acid.
USE: Antibacterial agent for the infectious diseases of the urinary tract. It has excellent antibacterial activity especially to Gram-positive bacteria, glucose-unfermenting bacteria, tuberculous bacilli, and antibiotic-resistant bacteria.
PROCESS: The objective compound can be prepared e.g. by reacting the compound of formula II (R4 is halogen, lower alkanesulfonyloxy, etc.) with nearly equimolar amount of the compound of formula III in an inert solvent (e.g. dimethyl sulfoxide) preferably under the pressure of 1W10atom at 100W200°C for 1W20hr.
UNO TETSUYUKI
MIYAMOTO HISASHI
NAKAGAWA KAZUYUKI
DE3144455A1 | 1982-06-24 |
Next Patent: AX-2, ITS PREPARATION AND ANTITUMOR AGENT CONTAINING AX-2