119736-16-2Relevant articles and documents
Purification and characterization of molybdenum-containing aldehyde dehydrogenase that oxidizes benzyl maltol derivative from Pseudomonas nitroreducens SB32154
Hibi, Makoto,Kozono, Iori,Ogawa, Jun,Takeuchi, Michiki
, p. 2390 - 2400 (2020)
Maltol derivatives are used in a variety of fields due to their metal-chelating abilities. In the previous study, it was found that cytochrome P450 monooxygenase, P450nov, which has the ability to effectively convert the 2-methyl group in a maltol derivative, transformed 3-benzyloxy-2-methyl-4-pyrone (BMAL) to 2-(hydroxymethyl)-3-(phenylmethoxy)-4H-pyran-4-one (BMAL-OH) and slightly to 3-benzyloxy-4-oxo-4 H-pyran-2-carboxaldehyde (BMAL-CHO). We isolated Pseudomonas nitroreducens SB32154 with the ability to convert BMAL-CHO to BMAL-COOH from soil. The enzyme responsible for aldehyde oxidation, a BMAL-CHO dehydrogenase, was purified from P. nitroreducens SB32154 and characterized. The purified BMAL-CHO dehydrogenase was found to be a xanthine oxidase family enzyme with unique structure of heterodimer composed of 75 and 15 kDa subunits containing a molybdenum cofactor and [Fe-S] clusters, respectively. The enzyme showed broad substrate specificity toward benzaldehyde derivatives. Furthermore, one-pot conversion of BMAL to BMAL-COOH via BMAL-CHO by the combination of the BMAL-CHO dehydrogenase with P450nov was achieved.
Synthesis method of 3-(benzyloxy)-4-oxo-4H-pyran-2-carboxylic acid
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, (2021/03/31)
The invention discloses a synthesis method of 3-(benzyloxy)-4-oxo-4H-pyran-2-carboxylic acid. The synthesis method sequentially comprises the following steps: S1, condensing 4-chloroacetoacetate and benzyl alcohol to obtain an intermediate I; S2, condensing the intermediate I with N,N-dimethylformamide dimethyl acetal to obtain an intermediate II; S3, performing ring closing on the intermediate IIand oxalic acid diester to obtain an intermediate III; and S4, decarboxylating the intermediate III in an acidic aqueous solution to obtain a target product. The method has the advantages of simple steps, mild conditions, cheap and easily available raw materials, and reduction of the cost of a target patent medicine.
Preparation method of pyrone compound
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Paragraph 0042; 0051-0054, (2020/09/23)
The invention provides a preparation method of a pyrone compound, and belongs to the field of pharmaceutical chemicals. According to the method, a pyrone compound sequentially reacts with acetal, concentrated sulfuric acid and sodium chlorite respectively, and extraction is performed to obtain a high-purity pyrone compound. The product produced by the method has the characteristics of high purity,high yield, low cost, simple operation and stable process.