Virginiamycin S1

N-[(3-Hydroxy-2-pyridinyl)carbonyl]-L-threonyl-(2R)-2-aMinobutanoyl-L-prolyl-4-(diMethylaMino)-N-Methyl-L-phenylalanyl-(2S)-4-oxo-2-piperidinecarbonyl-(2S)-2-phenylglycine (6-13)-lactone; NSC 92554; PA 114B; PristinaMycin P 1; Ostreogrycin B, PristinaMycin IA, StreptograMin B, Syncothrecin B1, Synergistin B, VernaMycin Balpha, VirginiaMycin 1A, NSC 125176, 14725-1, PA 114B, RP 12535; VirginiaMycin B; mikamycin B; N-[(3-Hydroxy-2-pyridinyl)carbonyl]cyclo(L-Thr*-D-Abu-L-Pro-N-methyl-4-(dimethylamino)-L-Phe-4-oxo-L-2-piperidinecarbonyl-L-phenyl Gly-);mikamycin B