- 作者: 徐鳳麟;秦玲
- 作者服務機構: 台北醫學院藥學研究所; 行政院衛生署藥物食品檢驗局
- 中文摘要: 於系統地研究台灣產植物之單寧成分中,從龍眼之種子除了分離出二個新奇之加水分解型單寧成分, acetonylgeraniin A(l)及acetonylgeraniin B(2),另外分取得gallic acid(3) , corilagin(4) , cheubulagic acid(5)。此外,從 新鮮皮部分離出(-)-epicatechin(6) , procyanidin B-2(7)及procyanidin C-l(8)。經由光譜圖以及化學之證據得知 acetonylgeraniin A及acetonylgeraniin B均具有acetonyl group而分?以α及β型式接著於dehydrohexa-hydroxyldiphenoyl部份。值得注意的是分佈於種子之單寧是加水分解型,而皮部主要含的是縮合型。
- 英文摘要: This work reports a systematic study of the tannin components in Formosan plants. Two novel hydrolyzable tannins, acetonylgeraniin A (1) and acetonylgeraniin B (2) together with gallic acid (3), corilagin (4) and chcubulagic acid (5), have been isolated from the seed of Euphoria longana LAM . (sapin-daceae). In addition, from the fresh bark of the same plant, (-)-epicatechin (6), procyanidin B-2 (7) and procyanidin C-l (8) were isolated. On the basis of spectroscopic and chemical evidence, acetonylgeraniin A and acetonylgeraniin B have a acetonyl group which is attached to the C-5 position of the dehydrohexa-hydroxyldiphcnoyl moiety with α- and β- form, respectively. It is interesting to note that the tannins distributed in seeds are of the hydrolyzable type, while the bark mainly contains the condensed type.
- 中文關鍵字: tannin; Euphoria longana; sapindaceae; acetonylgeraniin
- 英文關鍵字: --