530-57-4Relevant articles and documents
Interaction of anthocyanins and anthocyanidins with α-hydroxyethyl radicals
Domnina,Fenin,Ermakov,Magomedbekov
, p. 388 - 393 (2015)
The products of interaction of anthocyanins and anthocyanidins with α-hydroxyethyl radicals have been studied using spectrophotometry and liquid chromatography-mass spectrometry. It has been shown that anthocyanins and anthocyanidins oxidize the hydroxyethyl radical. The anthocyanin transformation products are oxidized with oxygen to the parent anthocyanins. Anthocyanidins irreversibly react to form the corresponding hydroxybenzoic acid and presumably 4-(2-hydroxyethyl)resorcinol.
Method for promoting iron-catalyzed oxidation of aromatic compound carbon - hydrogen bond to synthesize phenol by ligand
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Paragraph 0072-0073; 0127, (2021/09/21)
The method comprises the following steps: iron is used as - a catalyst metal; a sulfur-containing amino acid or cystine-derived dipeptide is a ligand; and under the common action of hydrogen peroxide as an oxidizing agent, an aromatic compound is synthesized to prepare a phenol. Under the action of an acid as an accelerant and hydrogen peroxide as an oxidizing agent, the aryl carbon - hydrogen bond is directly hydroxylated to form a phenolic compound, and the method for preparing the phenol by the catalytic oxidation reaction has a plurality of advantages. The reaction raw materials, the oxidant and the promoter are wide in source, low in price, environment-friendly and good in stability. The aromatic compound carbon - hydrogen bonds directly participate in the reaction to react in one step to form phenol. The reaction condition is mild, the functional group compatibility and the application range are wide. The reaction selectivity is good; under the optimized reaction conditions, the target product separation yield can reach 85%.
Terpenoid and phenolic constituents from the roots of Ilex pubescens
Zhou, Xu-Dong,Xu, Xiang-Wei,Xi, Yi-Yuan,Zhou, Yuan
, (2019/08/20)
Five new metabolites, including two monoterpene glycosides Pubescenosides L–M (1–2) and three phenolic glycosides, Pubescenosides N-P (3–5), along with nineteen known ones, including liganoids, hemiterpenoids and caffeoylquinic acid derivates, were isolated from the roots of Ilex pubescens. Their structures were elucidated from extensive spectroscopic analysis, including 1D and 2D NMR experiments. This study is the first to report monoterpene glycosides with β-pinene aglycone in Aquifoliaceae. Nine of these compounds were evaluated in vitro for their anti-platelet aggregation activities. Among them, compounds 3 and 4 showed moderate inhibitory activities on ADP-induced blood platelet aggregation [inhibition (%): 32.3 and 33.6, respectively] as compared to aspirin.
