Medicinal flowers. XXXVI.1) Acylated oleanane-type triterpene saponins with inhibitory effects on melanogenesis from the flower buds of Chinese Camellia japonica |
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Authors: | Nakamura Seikou Fujimoto Katsuyoshi Nakashima Souichi Matsumoto Takahiro Miura Tomoko Uno Kaoru Matsuda Hisashi Yoshikawa Masayuki |
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Institution: | Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Japan. |
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Abstract: | Four acylated oleanane-type triterpene oligoglycosides, sanchakasaponins E-H, were isolated from the flower buds of Camellia japonica cultivated in Yunnan province, China, together with four known triterpene oligoglycosides. The chemical structures of the new triterpene oligoglycosides were elucidated on the basis of chemical and physicochemical evidence. The inhibitory effects of the triterpene oligoglycoside constituents on melanogenesis in theophylline-stimulated B16 melanoma 4A5 cells were investigated. |
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