A new glucuronide saponin from tea leaves (Camellia sinensis var. sinensis.
A new glucuronide saponin (1) was isolated as its methyl ester (2) from the leaves of Camellia sinensis var. sinensis. On the basis of its spectral data and the results of chemical degradation, the structure was elucidated to be 3-O-[beta-D-galactopyranosyl(1-->2)-[beta-D- xylopyranosyl(1-->2)-alpha-L-arabinopyranosyl(1-->3)]- beta-D-glucuronopyranosyl]-21-O-cinnamoyl-16,22-di-O-acetylbarr ingtogenol C.
Sagesaka
Y M
YM
Central Research Institute, Ito-en Co., Ltd., Shizuoka, Japan.
Uemura
T
T
Watanabe
N
N
Sakata
K
K
Uzawa
J
J
D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013662:Tea / Q000737:chemistry*; D014315:Triterpenes
C090802:3-O-(galactopyranosyl(1-2)-(xylopyranosyl(1-2)-arabinopyranosyl(1-3))glucuronopyranosyl)-21-O-cinnamoyl-16,22-di-O-acetylbarringtogenol C; D012503:Saponins; D013662:Tea; D014315:Triterpenes