A quinolone synthetic antibacterial agent and a therapeutic agent for an infection which exhibit broad spectrum and strong antibacterial activity for both Gram positive and Gram negative bacteria, and which are also highly safe are provided. The compound provided is represented by following formula (I):
wherein R
1
and R
2
represent hydrogen atom, or the like; R
3
represents an alkyl group containing 1 to 6 carbon atoms, or the like; R
4
and R
5
independently represents hydrogen atom, an alkyl group containing 1 to 6 carbon atoms, or the like, with the proviso that R
4
and R
5
do not simultaneously represent hydrogen atom; or the substituents R
4
and R
5
together represent (a) a 3- to 6-membered cyclic structure including the carbon atom shared by R
4
and R
5
to form a spirocyclic structure with the pyrrolidine ring; R
6
and R
7
independently represents hydrogen atom, an alkyl group containing 1 to 6 carbon atoms, or the like; R
8
represents a halogen-substituted alkyl group containing 1 to 6 carbon atoms, or the like; X
1
represents hydrogen atom or a halogen atom; A represents nitrogen atom or a moiety represented by formula (II):
A quinolone synthetic antibacterial agent and a therapeutic agent for an infection which exhibit broad spectrum and strong antibacterial activity for both Gram positive and Gram negative bacteria, and which are also highly safe are provided. The compound provided is represented by formula (I):
METHOD FOR PRODUCING ASYMMETRIC TETRASUBSTITUTED CARBON ATOM-CONTAINING COMPOUND
申请人:Tani Yuichiro
公开号:US20090054648A1
公开(公告)日:2009-02-26
The invention provides an industrial method for producing a spiroaminopyrrolidone derivative, which is an intermediate for producing a quinolone antibacterial agent.
The invention provides a method for producing a compound represented by formula (2):
(wherein n is an integer of 2 to 5; R
1
represents a (substituted) alkyl group or a (substituted) aryl group; and R
2
represents a (substituted) alkoxycarbonyl group, a (substituted) aralkyloxycarbonyl group, a (substituted) aliphatic acyl group, or a (substituted) aromatic acyl group), which includes treating a compound represented by formula (1):
(wherein n, R
1
, and R
2
are the same as defined above; and R
3
represents a hydrogen atom, a (substituted) alkyl group, or a (substituted) aralkyl group) under a hydrogen gas atmosphere in the presence of a metallic catalyst.
Method for Production of Quinolone-Containing Lyophilized Preparation
申请人:Nishimoto Norihiro
公开号:US20080300403A1
公开(公告)日:2008-12-04
The present invention is directed to a lyophilized preparation which contains a synthetic quinolone antibacterial compound and, as a solo additive, a pH-adjusting agent, and which exhibits an excellent reconstituting property. The invention provides a method for producing a lyophilized preparation containing a synthetic quinolone antibacterial compound as an active ingredient, characterized by including, sequentially, cooling an aqueous solution containing a synthetic quinolone antibacterial compound and a pH-adjusting agent to yield a frozen product, elevating the temperature of the frozen product, and re-cooling the resultant to prepare the lyophilized preparation.
The present invention relates to [7-[(7S)-7-amino-7-methyl-5-azaspiro[2.4]heptan-5-yl]-6-fluoro-1-[(1R,2S)-2-fluorocyclopropyl]-8-methoxy-1,4-dihydro-4-oxoquinoline-3-carboxylic acid hemihydrate. This hemihydrate is stable and easy to prepare, and has excellent properties for a pharmaceutical bulk powder.