Leucomycin A3

• CAT Number: R051676
• CAS Number: 16846-24-5
• Molecular Formula: C₄₂H₆₉NO₁₅
• Molecular Weight: 827.99
• Purity: ≥95%
• Synonyms: 3-Acetate 4B-(3-methylbutanoate)leucomycin V; Antibiotic YL 704A3; EN 141; Iosalide; Jomybel; Josacine; Josamina; Josamycin; Kitasamycin A3; Turimycin A5; Vilprafen; Wilprafen
• Target: Bacterial
• Storage: -20°C
• IUPAC Name: [(2S,3S,4R,6S)-6-[(2R,3S,4R,5R,6S)-6-[[(4R,5S,6S,7R,9R,10R,11E,13E,16R)-4-acetyloxy-10-hydroxy-5-methoxy-9,16-dimethyl-2-oxo-7-(2-oxoethyl)-1-oxacyclohexadeca-11,13-dien-6-yl]oxy]-4-(dimethylamino)-5-hydroxy-2-methyloxan-3-yl]oxy-4-hydroxy-2,4-dimethyloxan-3-yl] 3-methylbutanoate
• InChI: InChI=1S/C42H69NO15/c1-23(2)19-32(47)56-40-27(6)53-34(22-42(40,8)50)57-37-26(5)54-41(36(49)35(37)43(9)10)58-38-29(17-18-44)20-24(3)30(46)16-14-12-13-15-25(4)52-33(48)21-31(39(38)51-11)55-28(7)45/h12-14,16,18,23-27,29-31,34-41,46,49-50H,15,17,19-22H2,1-11H3/b13-12+,16-14+/t24-,25-,26-,27+,29+,30+,31-,34+,35-,36-,37-,38+,39+,40+,41+,42-/m1/s1
• InChIKey: XJSFLOJWULLJQS-NGVXBBESSA-N
• SMILES: C[C@@H]1C/C=C/C=C/[C@@H]([C@@H](C[C@@H]([C@@H]([C@H]([C@@H](CC(=O)O1)OC(=O)C)OC)O[C@H]2[C@@H]([C@H]([C@@H]([C@H](O2)C)O[C@H]3C[C@@]([C@H]([C@@H](O3)C)OC(=O)CC(C)C)(C)O)N(C)C)O)CC=O)C)O

Leucomycin A3（Cat No.:R051676）is a macrolide antibiotic derived from Streptomyces kitasatoensis, known for its effectiveness against a range of Gram-positive bacterial infections. Structurally related to erythromycin, it inhibits bacterial protein synthesis by binding to the 50S ribosomal subunit, blocking peptide chain elongation. This antibiotic is particularly valuable in research focused on bacterial resistance and macrolide mechanism studies. Leucomycin A3 is used to investigate treatments for respiratory and skin infections, contributing insights into antibiotic development and resistance management in both pharmaceutical and microbiological research contexts.