Studies on the Chemical Components of the Stem of Formosan Plant~ Polyalthia longifolia Benth & Hook. f. 'pendula'
| Autor: | Mei-Chang Wang, 王美珍 |
|---|---|
| Rok vydání: | 2007 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 95 Polyalthia longifolia Benth.& Hook. f. “pendula” (Annonaceae) is an evergreen tree cultivated in southern Taiwan and is also widely distributed in the temperate regions of India. The stem of this species is traditionally used for the treatment of diabetes,fever, skin disease, hypertension, and helminthiasis. Nineteen compounds were isolated from the stem of Polyalthia longifolia Benth & Hook. f. “pendula”, and they contain five clerodane diterpenoids : 16-oxo-cleroda-3,13-dien-15-oic acid (PL1), 2-oxo-3,13E-clerodien-15-oic acid (PL2), 6α,16-dihydroxycleroda-3,13-dien-15-oic acid (PL4), 3β,16-dihydroxycleroda-4(18),13-dien-15-oic acid (PL5), 4α,18-Epoxy-16-hydro- xycleroda-13-en-15-oic acid (PL6) ; one azafluorenes alkaloid : darienine (PL3) ; six 8-oxo- protoberberines alkaloids : (-)-8-oxo-tetrahydro- plamatine (PL7), (-)-8-oxo-10-hydroxy-2,3,9-trimethoxy- berbine (PL8), (-)-8-oxo-9,10-dihydroxy-2,3-dimethoxy- berbine (PL9), (-)-8-oxo-3,10,11-trihydroxy-2-methoxyber- bine (PL10), (-)-8-oxo-11-hydroxy-2,3,9,10-tetramethoxy- berbine (PL11) and (-)-8-oxo-11-hydroxy-2,3,9-trimethoxy- berbine (PL12)；one amide : N-trans-Feruloyl-dopamine (P13) ; two fatty acid : 1-O-(9Z-octadecadienoyl) glycerol (PL14), 1-O-(9Z,12Z-octadecadienoyl) glycerol (PL15) ; steroids mixture : β-sitosterol-glucoside (PL16) ＆ stigmasterol-glucoside (PL17) and two unknown compound. The structures of these compounds were characterized and identified by spectral evidences. Among them, PL4、PL5、PL6、PL8、PL10 and PL11 are new compounds. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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