title: Synthesis and antibacterial activity of pyranmycin derivatives with N-1 and O-6 modifications.
abstract: Continuing from our ongoing effort in modifying aminoglycoside antibiotics with the goal of counteracting drug resistant bacteria, we have further derivatized pyranmycin, a neomycin class aminoglycoside antibiotic, with modifications at O-6 and N-1 positions. The revealed SAR results demonstrated that the antibacterial activity of pyranmycin can be modulated by different acylic substituents at O-6. Among these results, the 6-O-aminoethyl derivative, JT050, showed effective activity against resistant strain Escherichia coli (pTZ19U-3) and E. coli (pSF815), which provides insight into further structural modifications.
authors.affiliation: Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, UT 84322-0300, USA.
authors.forename: Jie
authors.initials: J
authors.lastname: Li
authors.forename: Fang-I
authors.initials: FI
authors.lastname: Chiang
authors.forename: Hsiao-Nung
authors.initials: HN
authors.lastname: Chen
authors.forename: Cheng-Wei Tom
authors.initials: CW
authors.lastname: Chang
mesh_terms: D000617:Aminoglycosides / Q000138:chemical synthesis* / Q000737:chemistry; D000900:Anti-Bacterial Agents / Q000138:chemical synthesis* / Q000494:pharmacology*; D002240:Carbohydrate Sequence; D024881:Drug Resistance, Bacterial; D004926:Escherichia coli / Q000187:drug effects; D008826:Microbial Sensitivity Tests; D008958:Models, Molecular; D008969:Molecular Sequence Data; D009584:Nitrogen / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D013329:Structure-Activity Relationship
chemical_list: D000617:Aminoglycosides; D000900:Anti-Bacterial Agents; C475966:Pyranmycin; D009584:Nitrogen; D010100:Oxygen