Medicinal flowers. XXII. Structures of chakasaponins V and VI, chakanoside I, and chakaflavonoside A from flower buds of Chinese tea plant (Camellia sinensis).
Two acylated oleanane-type triterpene oligoglycosides, chakasaponins V and VI, an aromatic glycoside, chakanoside I, and an acylated flavonol oligoglycoside, chakaflavonoside A, were isolated from the flower buds of Chinese tea plant [Camellia sinensis (L.) O. KUNTZE]. The chemical structures of those new glycosides were elucidated on the basis of chemical and physicochemical evidence.
Yoshikawa
Masayuki
M
Kyoto Pharmaceutical University, Kyoto, Japan. myoshika@mb.kyoto-phu.ac.jp
Sugimoto
Sachiko
S
Nakamura
Seikou
S
Matsuda
Hisashi
H