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It is prepared by disulfonation of benzoic acid followed by hydrolysis of the disulfonate. [ 3 ] It is a metabolite of alkylresorcinols , first identified in human urine [ 4 ] and can be quantified in urine [ 5 ] and plasma, [ 6 ] and may be an alternative, equivalent biomarker of whole grain wheat intake.
Dihydroxybenzoic acids (DHBA) are a type of phenolic acids. There are six main compounds, having all the same molecular formula C 7 H 6 O 4. Those are: 2,3-Dihydroxybenzoic acid (2-Pyrocatechuic acid or hypogallic acid) 2,4-Dihydroxybenzoic acid (β-Resorcylic acid) 2,5-Dihydroxybenzoic acid (Gentisic acid) 2,6-Dihydroxybenzoic acid (γ ...
2,3-diDHB dehydrogenase catalyzes the NAD +-dependent oxidation of 2,3-dihydro-2,3-dihydroxybenzoate to produce an aromatic compound 2,3-dihydroxybenzoic acid (2,3-DHB or simply DHB). [4] In times of iron deficiency, iron uptake is controlled by three genes: ent , fep , and fes for synthesis, export, and uptake of ferric Enterobactin and its ...
Gentisic acid is produced by carboxylation of hydroquinone. [6] C 6 H 4 (OH) 2 + CO 2 → C 6 H 3 (CO 2 H)(OH) 2. This conversion is an example of a Kolbe–Schmitt reaction. Alternatively the compound can be synthesized from salicylic acid via Elbs persulfate oxidation. [7] [8]
2,4-Dihydroxybenzoic acid (β-resorcylic acid) is a dihydroxybenzoic acid. As a resorcylic acid, it is one of the three isomeric crystalline acids that are both carboxyl derivatives of resorcinol and dihydroxy derivatives of benzoic acid. [4] Synthesis from resorcinol is via the Kolbe-Schmitt reaction. [5]
Mycophenolic acid was prepared in nine steps in an overall yield of 17-19%. [15] Scheme 14:Benzannulation Toward the Synthesis of Mycophenolic Acid. In the synthesis of highly substituted indoles performed by Danheiser, the key step was a benzannulation reaction using cyclobutenone and ynamides to produce highly substituted aniline derivatives.
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2,3-Dihydroxybenzoic acid is a natural phenol found in Phyllanthus acidus [2] and in the aquatic fern Salvinia molesta. [3] It is also abundant in the fruits of Flacourtia inermis. It is a dihydroxybenzoic acid, a type of organic compound. The colorless solid occurs naturally, being formed via the shikimate pathway.