(EN) 127
[Abstract]
NOVEL, CEPHALOSPORIN DERIVATIVES AND PHARMACEUTICAL COMPOSITIONS THEREOF
D The present invention relates to novel cephaicaporin
derivatives represented by Chemical Formula 1.
W°
)1144,„
' ;.
R2
(1)
Wherein, X, Y, L, RI, and R2 are as same as defined in the description of the invention.
10 The bresent invent: on also reiates to pharmaceutical
antibiotic compositions comprising a novel celphalosporin derivative represented by Chemical Formula I, a prbdrug thereof, a hydrate thereof, a solvate thereof, an isomer thereof, or a oharracentically acceptable salt thereof as an effective
15 ingredient.
Abcording to the present invention, novel cephalosporin derivatives, a prodrug thereof, a hydrate thereof, a solvate therebf, an isomer thereof, or a pharmaceutically acceptable salt thereof as an effertive inoredient for the broad spectrum. of antibiotic resistant, low tozicity, particularly in. Gram-negative bacteria, which can be useful with strong antimicrobial activity.
Figure 1