Synthesis of Pyrazine Cyclic Hydroxamic Acids Related to Aspergillic Acid
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چکیده
منابع مشابه
Physiological role of the cyclic hydroxamic acids
Roots of young seedleings of barnyard grass, maize, rye and wheat secret hydroxamic acids. Their compexes with Fe/III/-ions are available sources of iron. It is possible that the cyclic hydroxamic acids play a role in the alternative mechanism of iron uptake. The hydroxamic acids secreted by barnayard grass roots have an allelopathic role by inhibiting the roots growth of rice. Acta Biol Szeged...
متن کاملBiosynthesis of aspergillic acid.
of aspergillic acid from isoleucine in replacement cultures (3), there has been no work reported previously on the biogenesis of this antibiotic. In the present work, A. flavus was grown on a medium containing radioactive leucine or isoleucine, and these compounds were found to be incorporated into the aspergillic acid formed. Aspergillic acid was degraded to determine what part of the molecule...
متن کاملInterference with valine and isoleucine biosynthesis by cyclic hydroxamic acids.
Hogg, Robert W. (University of Illinois, Urbana), Chitra S. Biswas, and Harry P. Broquist. Interference with valine and isoleucine biosynthesis by cyclic hydroxamic acids. J. Bacteriol. 90:1265-1270. 1965.-The introduction of a hydroxyl group in a number of common barbiturates, a substitution which converts these compounds to cyclic hydroxamic acids, gives rise to compounds which inhibit growth...
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calix(6)arene hydroxamic acids (iii) are synthesised for the first time by reactingcalix(6)arene acid chloride(ii) with substituted hydroxylamines at low temperature in the presence ofsodium bicarbonate. the p-carboxycalix(6)arene(i) is obtained by an acid catalysed condensationreaction of p-hydroxybenzoic acid and formaldehyde. these calixarenes are characterised by meltingpoint, uv, ir, 1h nm...
متن کاملSynthesis and characterization of fatty hydroxamic acids from triacylglycerides.
In this study, fatty haydroxamic acids (FHAs), which have biological activities as antibiotics and antifungal, have been synthesized via refluxing of triacylglycrides, palm olein, palm stearin or corn oil with hydroxylamine hydrochloride. The products were characterized using the complex formation test of hydroxamic acid group with zinc(I), copper(II) and iron(III), various technique methods in...
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ژورنال
عنوان ژورنال: Nature
سال: 1949
ISSN: 0028-0836,1476-4687
DOI: 10.1038/164181a0