Rib-X Pharmaceuticals Novel Antibiotic Delafloxacin Named One of R&D Directions 100 Great Investigational Dru...( NEW HAVEN Conn. April 2 /- Rib-X Phar...),Health

NEW HAVEN, Conn., April 2 /PRNewswire/ -- Rib-X Pharmaceuticals, Inc. ("Rib-X" or the "Company"), a development-stage company focused on the discovery and development of novel antibiotics for the treatment of antibiotic-resistant infections, today announced that its lead compound, delafloxacin, has been selected by R&D Directions editors for the 8th annual report on "100 Great Investigational Drugs," published in the March 2009 issue.

R&D Directions is a leading pharmaceutical industry magazine. Compounds selected by editors for the report, including delafloxacin, demonstrated "particular promise in a... growing therapeutic area of unmet medical need... and target disease pathways using a distinctly innovative mechanism of action."(1)

"We are honored to have our lead compound, delafloxacin, recognized by the editors of R&D Directions as one of the top 100 investigational drugs of 2009," said Susan Froshauer, PhD, President and CEO of Rib-X Pharmaceuticals. "The broad spectrum activity demonstrated by delafloxacin against a wide range of highly-resistant bacteria may offer the medical community a much needed treatment alternative for a variety of serious hospital treated infections, including complicated skin, hospital acquired pneumonia, endocarditis and others. We are proud of the work we have done at Rib-X to further the development of this compound."

A copy of the R&D Directions 100 Great Investigational Drugs of 2009 report can be viewed at http://www.rddirections.com/magazines/randd/.

About Delafloxacin

Delafloxacin, a novel, broad spectrum, next-generation fluoroquinolone, has demonstrated better activity than other quinolones against Gram-positive bacteria, including isolates of MRSA that are re
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