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CEPHALOSPORIN HAVING CATECHOL GROUP
The present invention provides Cephem compounds which have a wide antimicrobial spectrum and have potent antimicrobial activity against beta-lactamase producing Gram negative bacteria as follows: A compound of the formula: wherein, X is N, CH or C-Cl; T is S or the like; A and G are lower alkylene or the like; B is a single bond or the like; D is a single bond, -NR7-, -CO-, -CO-NR7-, -NR7-CO-, -NR7-CO-NR7-, or the like; E is optionally substituted lower alkylene; F is a single bond or optionally substituted phenylene; R3, R4, R5 and R6 each is independently hydrogen, halogene, nitrile, or the like; or an ester, a compound protected at the amino on the ring in the 7-side chain, a pharmaceutically acceptable salt, or a solvate thereof.
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Reference£º
Quinuclidine – Wikipedia,
Quinuclidine | C7H22N | ChemSpider