Lm. Ednie et al., COMPARATIVE ANTIANAEROBIC ACTIVITIES OF THE KETOLIDES HMR-3647 (RU-66647) AND HMR-3004 (RU-64004), Antimicrobial agents and chemotherapy, 41(9), 1997, pp. 2019-2022
HMR 3647 (RU 66647) and HMR 3004 (RU 64004), two ketolides, had MICS a
t which 50% of the strains are inhibited (MIC(50)s) of 0.06 to 0.125 m
u g/ml and MIC(90)s of 16.0 mu g/ml against 352 anaerobes. MIC(50)s an
d MIC(90)s of erythromycin, azithromycin, clarithromycin, and roxithro
mycin were 0.5 to 2.0 mu g/ml and 32.0 to >64.0 mu g/ml, respectively.
HMR 3647 and HMR 3004 were more active against non-Bacteroides fragil
is-group anaerobes (other than Fusobacterium mortiferum, Fasobacterium
varium and Clostridium difficile).