Lonomycin') is an antibiotic elaborated by Streptomyces ribosidificus and shows an antimicrobial activity against gram-positive bacteria including mycobacteria as well as some kind of filsmentous fungi. Lonomycin is also effective in the treatment of coccidial infections
The structure of salinomycin, a new member of the polyether antibiotics
✍ Scribed by Haruyasu Kinashi; Noboru Ōtake; Hiroshi Yonehara; Shoichi Sato; Yoshihiko Saito
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- French
- Weight
- 168 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
Salinomycin'
is a new antibiotic elaborated by the strain of Streptomyces aZbus and has an antimicrobial activity against Gram-positive bacteria, mycobacteria and fungi. Furthermore, salinomycin is effective in the treatment of coccidial infections in poultry.
In light of its biological activity coupled with the physicochemical properties and spectral data, the antibiotic is assumed to belong to a new member of the polyether antibiotics.
In this communication, we wish to report the structural elucidation of salinomycin p-iodophenacyl ester by X-ray analysis as depicted formula (I).
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Salinomycin was synthesized from D-glucose, D-mannitol, and ethyl L-lactate via coupling of Cl-C9, ClO-C17, and C18-C30 segments. Benzyl-type protecting groups as well as regioand stereoselective reactions played a crucial role.
The structure of a new antibiotic thiotropocin is described. In the course of our antibiotic screening, a new antibiotic has been isolated as crystals by ethyl acetate extraction and silica gel chromatography from the fermentation broth of Pseudomonas sp. CB-104. The acidic lipophilic antibiotic has
26-Deoxylaidlomycin (I, C,,H,,O, ,Na) was isolated together with its cometabolite laidlomycin (11) from the mycelium of Streptoverticillium olivoreticuli IMET 43782. Its structure was determined by high-field I3C and 'H NMR. and MS spectral studies. The antibacterial activity of I against Burillus s