Studies on the Constituents of the Flower of Camellia japonica (2)
Open Access
- 1 January 1984
- journal article
- research article
- Published by Pharmaceutical Society of Japan in YAKUGAKU ZASSHI
- Vol. 104 (2) , 157-161
- https://doi.org/10.1248/yakushi1947.104.2_157
Abstract
Chemical constituents of the flower of C. japonica (Theaceae) were investigated. Three flavonols (quercetin, kaempferol and sexangularetin) and 3 phenolic compounds (p-hydroxybenzoic acid, protocatechuic acid and gallic acid) were identified. A sterol mixture of .alpha.-spinasterol and stigmast-7-en-3.beta.-ol, and a glucoside mixture of stigmasteryl-D-glucoside and .beta.-sitosteryl-D-glucoside were identified on the basis of spectral evidence and gas chromatography. A new triterpene, 3.beta.-hydroxy-28-norolean-17-en-16-one-12,13-epoxide was also identified on the basis of chemical and spectral data.Keywords
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