Výsledky vyhledávání - "J. S. E. HOLKER"

Loss of a methyl group in an acid-catalysed Baeyer–Villiger oxidation of 4,4-dimethylcholestan-3-one

Autor: J. S. E. Holker, P. J. Ramm, W. R. Jones

Publikováno v: J. Chem. Soc. C. :357-361

Oxidation of 4,4-dimethylcholestan-3-one with peroxy-acid in the presence of mineral acid gives the lactone 4aα-methyl-4-oxa-A-homocholestan-3-one. This reaction has been shown to proceed by way of a number of intermediates including 4a,4a-dimethyl-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::848ab1fade16e68d964792b5a8447a37
https://doi.org/10.1039/j39690000357

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The biosynthesis of fungal metabolites. Part II. The β-oxo-lactone equivalents in rubropunctatin and monascorubrin

Autor: J. R. Hadfield, J. S. E. Holker, D. N. Stanway

Publikováno v: J. Chem. Soc. C. :751-755

Incorporations of diethyl [1-14C]malonate by Monascus purpureus Wentii into rubropunctatin (III; R = C5H11) and monascorubrin (III; R = C7H15) have shown that the main poly-β-ketide chain of these metabolites is assembled from acetate plus malonate

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::759e09d577b5dbbf04e8cf9e71280e45
https://doi.org/10.1039/j39670000751

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