منابع مشابه
2-pyrone-4,6-dicarboxylic acid, a catabolite of gallic acids in Pseudomonas species.
2-Pyrone-4,6-dicarboxylate hydrolase was purified from 4-hydroxybenzoate-grown Pseudomonas testosteroni. Gel filtration and electrophoretic measurements indicated that the preparation was homogeneous and gave a molecular weight of 37,200 for the single subunit of the enzyme. Hydrolytic activity was dependent upon a functioning sulfhydryl group(s) and was freely reversible; the equilibrium posit...
متن کاملBiosynthesis of phlorisovalerophenone and 4-hydroxy-6-isobutyl-2-pyrone in Escherichia coli from glucose
BACKGROUND Type III polyketide synthases (PKSs) contribute to the synthesis of many economically important natural products, which are typically produced by direct extraction from plants or synthesized chemically. For example, humulone and lupulone (Fig. 1a) in hops (Humulus lupulus) account for the characteristic bitter taste of beer and display multiple pharmacological effects. 4-Hydroxy-6-me...
متن کاملPyrone glycosides from Acosmium panamense (Benth.) Yacovlev.
Besides caffeic acid three pyrones have been isolated from aquous bark extracts from Acosmium panamense and their structures were determined using spectroscopical methods. Besides the already described desmethylyangonine its O4'-mono as well as the di(1-6)glucoside are found the first time.
متن کاملIR , Raman and Computational Study of 2 - Ethyl - 3 - hydroxy - 4 - pyrone
IR and Raman spectra of 2-Ethyl-3-hydroxy-4-pyrone were recorded and analyzed. The vibrational wavenumbers were computed using B3LYP/6-31G* basis. The data obtained from vibrational wavenumber calculations are used to assign vibrational bands obtained experimentally.
متن کاملPyrone-Based Inhibitors of Metalloproteinase Types 2 and 3 May Work as Conformation-Selective Inhibitors
Matrix metalloproteinases are zinc-containing enzymes capable of degrading all components of the extracellular matrix. Owing to their role in human disease, matrix metalloproteinase have been the subject of extensive study. A bioinorganic approach was recently used to identify novel inhibitors based on a maltol zinc-binding group, but accompanying molecular-docking studies failed to explain why...
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ژورنال
عنوان ژورنال: J. Chem. Soc., Trans.
سال: 1910
ISSN: 0368-1645
DOI: 10.1039/ct9109700457