1. Synthesis and Evaluation of Antibacterial Activity of Bottromycins
- Author
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Satoshi Omura, Tomoyasu Hirose, Hidehito Matsui, Takeshi Yamada, Goh Sennari, Yuki Horimatsu, Yutaka Kobayashi, Hiroyuki Shimamura, Toshiaki Sunazuka, Hideaki Hanaki, and Miu Yagita
- Subjects
chemistry.chemical_classification ,Methicillin-Resistant Staphylococcus aureus ,010405 organic chemistry ,Stereochemistry ,Organic Chemistry ,Total synthesis ,Peptide ,Vancomycin Resistance ,Microbial Sensitivity Tests ,biochemical phenomena, metabolism, and nutrition ,010402 general chemistry ,Antimicrobial ,01 natural sciences ,Peptides, Cyclic ,0104 chemical sciences ,Anti-Bacterial Agents ,chemistry.chemical_compound ,chemistry ,Sulfinamide ,medicine ,Vancomycin ,Antibacterial activity ,Mannich reaction ,Bottromycin ,medicine.drug - Abstract
Total synthesis of bottromycin A2 can be accomplished through a diastereoselective Mannich reaction of a chiral sulfinamide, mercury-mediated intermolecular amidination, and cyclization of a constrained tetracyclic peptide. Exploitation of this process allowed the synthesis of several novel bottromycin analogs. The antimicrobial activity of these analogs was evaluated in vitro against Gram-positive bacteria, such as methicillin resistant Staphylococcus aureus (MRSA) and vancomycin resistant enterococci (VRE). Structure–activity relationships were explored taking into consideration the unique three-dimensional structure of the compounds. Notably, one of the new analogs devoid of a methyl ester, which is known to lower the in vivo efficacy of bottromycin, exhibited antibacterial bioactivity comparable to that of vancomycin.
- Published
- 2018