Oritavancin is a novel semisynthetic glycopeptide antibiotics. On August 6, 2014, the FDA approved oritavancin for treatment of skin infections. Oritavancin possesses potent and rapid bactericidal activity in vitro against a broad spectrum of both resistant and susceptible Gram-positive bacteria, including Staphylococcus aureus, MRSA, enterococci, and streptococci.
Isepamicin (Sch 21420) is a potent aminoglycoside antibacterial compound with enhanced efficacy against strains harboring type I 6'-acetyltransferase. Its antibacterial spectrum encompasses Enterobacteriaceae and staphylococci, while exhibiting resistance against anaerobes, Neisseriaceae, and streptococci. Moreover, Isepamicin displays a robust concentration-dependent bactericidal effect, a prolonged post-antibiotic effect lasting several hours, and is capable of inducing adaptive resistance.
Omadacycline, also known as PTK 0796 and Amadacyclin, is a novel first-in-class aminomethylcycline with potent activity against important skin and pneumonia pathogens, including community-acquired methicillin-resistant Staphylococcus aureus (MRSA), β-hemolytic streptococci, penicillin-resistant Streptococcus pneumoniae, Haemophilus influenzae, and Legionella. Omadacycline is active against strains expressing the two main forms of tetracycline resistance (efflux and ribosomal protection). The primary effect of omadacycline is on bacterial protein synthesis, inhibiting protein synthesis with a potency greater than that of tetracycline. The binding site for omadacycline is similar to that for tetracycline.