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  5. 七星月桃、椆櫟柿寄生、叢花百日青與一枝香 之化學成分及其生物活性之研究
 
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七星月桃、椆櫟柿寄生、叢花百日青與一枝香 之化學成分及其生物活性之研究

Other Title
Studies on the chemical constituents and bioactivities of
Alpinia densespicata Hayata, Viscum articulatum Burm, Podocarpus fasciculus de Laubenfels
and Vernonia cinerea Less.
Type
thesis
Date Issued
2010-01-18
Author(s)
郭祐任
Advisor
何秀娥
Subjects
系所名稱:藥學系(博士班)
Description
學位別:博士
語文別:中文
指導教授:何秀娥
共同指導教授:郭曜豪
口試委員:吳永昌 ;李慶國;王靜瓊
中文關鍵字:七星月桃;椆櫟柿寄生;叢花百日青一枝香.
Abstract
癌症為國人致死原因之首位,本實驗室經生物活性體外篩選,發現七星月桃、椆櫟柿寄生、叢花百日青、一枝香等乙醇萃取物具有初步抗癌療效及部分抗氧化效果。因此分別對各植物進行成份分離及純化,再利用各種光譜技術,進行純物質結構式的判定和物化性質及活性的探討。
七星月桃 (Alpinia densespicata) 中分離出之二十三個化合物,包括四個新的labdane diterpene glycosides,alpindenosides A-D,以及兩個新的norditerpene glycosides,noralpindenosides A-B,另外尚有三個已知的flavonoid glycosides,兩個固醇,六個glycosidic,兩個stilbenes,以及1-??-D-arabinofuranosy-lH-pyrimidine-2,4-dione,loliolide,7-methoxy-chromen-4-one,與一個flavonoid。Alpindenoside A 經水解反應去除醣基後有較佳的抗發炎反應 (IC50 = 12.0 uM)。而noralpindenosides A-B之6-6-5環構型為天然物中首次發現之新骨架。
椆櫟柿寄生 (Viscum articulatum) 中分離出之十四個化合物,包括八個黃酮類,兩個新的diphenylpropanes (Visartisides E, F),兩個diphenylpropane,一個benzenoid glycoside與一個triterpenoid類化合物。由活性試驗結果可發現flavone glycoside和cinnamoyl連接後會提高其抗發炎效果。
叢花百日青 (Podocarpus fasciculus) 中分離出之三十二個化合物,分別為一個新發現的16-hydroxy communic acid,四個雙萜類,四個雙黃酮類,十八個黃酮類,四個芳香族化合物,以及nagilactone C。新化合物無細胞毒殺效果且具微弱抗發炎活性 (IC50 =36.1 uM)。
一枝香 (Vernonia cinerea) 中分離出之十八個化合物,包括八個倍半萜內酯環類,三個醯氨類,四個酚類,兩個黃酮類,以及 dehydrovamifdiol。
由上述植物中共分離純化到九個新化合物和七十八個已知化合物,藉由一維、二維核磁共振光譜等物理數據及化學方法確認其結構。生物活性試驗結果顯示,部分化合物成份對於癌細胞分別有不同程度的毒殺作用。且除了癌細胞毒殺外,椆櫟柿寄生更有抗發炎的活性效果。進一步研究則正在進行中。
URI
https://203.71.86.71/handle/123456789/13323

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