The invention relates to antibacterial compounds of formula I
wherein R, M and A are as defined in the description, to pharmaceutical compositions containing them and uses of these compounds in the manufacture of medicaments for the treatment of bacterial infections.
AHMED YUSUF; QURESHI M. IKRAM; HABIB M. SALEEM; FAROOQI M. AMIR, BULL. CHEM. SOC. JAP., 60,(1987) N 3, 1145-1148
作者:AHMED YUSUF、 QURESHI M. IKRAM、 HABIB M. SALEEM、 FAROOQI M. AMIR
DOI:——
日期:——
Quinoxaline Derivatives. XII. The Reactions of Quinoxaline 1,4-Dioxides with Acetic Anhydride
作者:Yusuf Ahmed、M. Ikram Qureshi、M. Saleem Habib、M. Amir Farooqi
DOI:10.1246/bcsj.60.1145
日期:1987.3
reagent took place exclusively on N-oxide para to the electron-donating substituents, and none of the other expected isomeric compounds XVIIb–d were isolated. Whereas 6-chloroquinoxaline 1,4-dioxide (XIIIe) bearing an electron-attracting chloro substituent on the benzene ring gave exclusively the other isomers XVIIe, XVIIIe, and XXe. A mechanism for this novelrearrangement is proposed and discussed.