Phytochemistry p. 1753 - 1756 (1984)
Update date:2022-08-11
Topics:
Nonaka, Gen-Ichiro
Sakai, Ryo
Nishioka, Itsuo
Two hydrolysable tannins were isolated from green tea, and their structures were characterized by chemical and spectral means as 1,4,6-tri-O-galloyl-β-D-glucose and 1-O-galloyl-4,6-(-)-hexahydroxydiphenoyl-β-D-glucose.In addition, a new proanthocyanidin gallate was isolated, together with the known procyanidins B-2, B-4 and C-1.The structure of the proanthocyanidin was established as epigallocatechin-(4β -> 8)-3-O-galloylepicatechin.Key Word Index - Thea sinensis; Theaceae; green tea; ellagitannin; gallotannin; proanthocyanidin; polyphenol.
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Doi:10.1021/jo00195a017
(1984)Doi:10.1021/acs.jpca.8b02023
(2018)Doi:10.1016/j.tetasy.2011.08.016
(2011)Doi:10.1039/c8sc02744g
(2018)Doi:10.1039/c7cc00551b
(2017)Doi:10.1016/j.ejmech.2018.06.062
(2018)