Josamycin is a macrolide antibiotic. It was isolated by Hamao Umezawa and his colleagues from strains of Streptomyces narbonensis var. josamyceticus var. nova in 1964.
{{Drugbox | Verifiedfields = changed | verifiedrevid = 477496532 | IUPAC_name = (2S,3S,4R,6S)-6-{[(2R,3S,4R,5R,6S)-6-{[(4R,5S,6S,7R,9R,10R,11E,13E,16R)-4-Acetoxy-10-hydroxy-5-methoxy-9,16-dimethyl-2-oxo-7-(2-oxoethyl)oxacyclohexadeca-11,13-dien-6-yl]oxy}-4-(dimethylamino)-5-hydro xy-2-methyltetrahydro-2H-pyran-3-yl]oxy}-4-hydroxy-2,4-dimethyltetrahydro-2H-pyran-3-yl 3-methylbutanoate | image = Josamycin.png | image_class = skin-invert-image | image2 = Josamycin ball-and-stick.png | image_class2 = bg-transparent
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).