Purification of trichomycin and preparation of water-insoluble derivatives thereof, with special reference to rivanol-trichomycin and marfanil-trichomycin.
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Two polyene macrolide, trichomycins A and B, were compared by physico-chemical and microbiological methods. The two antibiotics were found to have the same molecular formula, C58H84N2O18 (MW 1,096), by elemental analysis and FAB-MS. However, 1H and 13C NMR spectrometry studies indicated that the hydroxyl at C-5 of trichomycin A located on C-9 in trichomycin B. Trichomycin B possessed lower activities against fungi and yeasts than those of trichomycin A.
A high-performance liquid chromatographic method for the separation of individual components of polyene macrolide antibiotics has been developed. The three heptaene macrolide antibiotics, candicidin, levorin and trichomycin, have been investigated and compared. In all instances these compounds proved to be complex mixtures. It is demonstrated that candicidin and levorin are identical, whereas trichomycin differs in composition from these two substances.
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