Metabolic products of microorganisms. 254. Structure of the new nikkomycins pseudo-Z and pseudo-J.
نویسندگان
چکیده
Two new nikkomycins were isolated from the fermentation broth of Streptomyces tendae Tü 901/PF 53+-3. These new metabolites, nikkomycins pseudo-Z (psi-Z,1) and pseudo-J (psi-J, 2) differ from the corresponding nikkomycins Z and J by a C-glycosidic bond between C-5 of uracil and C-1' of 5-amino-5-deoxy-D-allo-furanuronic acid instead of an N-glycosidic bond. The structure elucidation was achieved by two-dimensional NMR techniques and mass spectrometry.
منابع مشابه
Metabolic products of microorganisms. 228. New nikkomycins produced by mutants of Streptomyces tendae.
Four new dipeptidyl nikkomycins of the Z- and the X-series with a variation in the amino acid moiety of the molecule were isolated from the mutant Streptomyces tendae 901/395 and characterized. Nikkomycins Kz and Kx contain 2-amino-4-hydroxy-4-(2-pyridyl)butyric acid, and nikkomycins Oz and Ox 2-amino-4-hydroxy-4-(5-hydroxy-2-pyridyl)butyric acid. In contrast to nikkomycins Z and X, nikkomycins...
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ورودعنوان ژورنال:
- The Journal of antibiotics
دوره 42 5 شماره
صفحات -
تاریخ انتشار 1989