Methylenebisnicotiflorin: a rare methylene-bridged bisflavonoid glycoside from ripe Pu-er tea.
A new methylene-bridged dimeric flavonol glycoside, methylenebisnicotiflorin (1), was isolated from ripe Pu-er tea, along with 10 known flavonoids (2-11) and seven known phenolic compounds (12-18). The structure elucidation was based on spectroscopic analysis. Among them, 1,3-dihydroxyphenyl-2-O-sulfate (13), 2,3,4-trihydroxybenzoic acid (16) and 3,3',4,4'-tetrahydroxybiphenyl (18) are reported from tea plants for the first time.
a State Key Laboratory of Phytochemistry & Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , P.R. China.|b Chongqing Institute for Food and Drug Control , Chongqing 401121 , P.R. China.
Mu-Ke
MK
Tao
a State Key Laboratory of Phytochemistry & Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , P.R. China.
Min
M
Xu
a State Key Laboratory of Phytochemistry & Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , P.R. China.|c University of Chinese Academy of Sciences , Beijing 100049 , P.R. China.
Han
H
Zhang
a State Key Laboratory of Phytochemistry & Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , P.R. China.|c University of Chinese Academy of Sciences , Beijing 100049 , P.R. China.
Hui
H
Chen
a State Key Laboratory of Phytochemistry & Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , P.R. China.
Chang
C
Liu
a State Key Laboratory of Phytochemistry & Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , P.R. China.
Hong-Tao
HT
Zhu
a State Key Laboratory of Phytochemistry & Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , P.R. China.
Dong
D
Wang
a State Key Laboratory of Phytochemistry & Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , P.R. China.
Chong-Ren
CR
Yang
a State Key Laboratory of Phytochemistry & Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , P.R. China.
Ying-Jun
YJ
Zhang
D028241:Camellia sinensis / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification; D044948:Flavonols / Q000737:chemistry* / Q000302:isolation & purification; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification; D015394:Molecular Structure; D010636:Phenols / Q000737:chemistry / Q000302:isolation & purification; D010936:Plant Extracts / Q000737:chemistry; D013662:Tea / Q000737:chemistry*
C499937:1,3-dihydroxyphenyl-2-O-sulfate; D005419:Flavonoids; D044948:Flavonols; D006027:Glycosides; D010636:Phenols; D010936:Plant Extracts; D013662:Tea; C000610651:methylenebisnicotiflorin
bisflavonoid glycoside; methylene-bridged; methylenebisnicotiflorin; ripe Pu-er tea