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Cover Feature: Stereochemistry of a Cyclic Epicatechin Trimer with C 3 Symmetry Produced by Oxidative Coupling (Eur. J. Org. Chem. 5/2021)
Author(s) -
Kawazoe Rina,
Matsuo Yosuke,
Saito Yoshinori,
Tanaka Takashi
Publication year - 2021
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.202100037
Subject(s) - trimer , chemistry , polyphenol , stereochemistry , cover (algebra) , computational chemistry , dimer , organic chemistry , antioxidant , mechanical engineering , engineering
The Cover Feature shows the structure of a cyclic epicatechin trimer produced by oxidative coupling. The trimer has a C 3 symmetric structure shaped like three cats sleeping. Its stereostructure was assigned on the basis of various spectroscopic data, including theoretical calculations of the NMR and ECD data. Epicatechin is a type of plant polyphenol and is present in various foods such as green tea, apples, grapes, and cocoa. During black tea production, various dimers and trimers of tea catechins, probably including the cyclic epicatechin trimer as well, are generated via enzymatic oxidation. More information can be found in the Communication by Y. Matsuo, T. Tanaka et al.