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香水樹生物鹼成份研究 Studies on the alkaloids of cananga odorata

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香水樹生物鹼成份研究

Studies on the alkaloids of cananga odorata

中文摘要

香水樹(Cananga odorata Hook.f.et Thomson)屬於蕃荔枝科(Annonaceae)之常綠喬 木。在國內外民間藥用以治療瘧疾,頭皮屑和癬。有關抗癌性蕃荔枝科植物成分 研究在國外相當積極。爲繼續對本科植物做系統的研究以詳細追查本植物有效成 分,並提供植物化學成分分類、生合成和生物活性的研究資料,開始本植物生物 鹼成份研究。 有關本植物過去曾分離出 oxoushinsunine(I),roemerine(II),anonaine(III), ushinsunine(IV),eupolauridine(canangine)(V),和 sampangine(VI)。今從台灣產本 植物分離出(I),(II),(IV)三種成分外,尚發現有 ushinsunine N-oxide(VII), reticuline(VIII),coreximine(IX)。其中(VII)證實為ㄧ新鹽基。另外合成 O-methyl ushinsunine(X)及 O-methyl michelalbine(XI)。(I)及(III)已被證實具有細胞毒和抗菌 作用。

以上幾種成分中,(IV)被認為是(I)之前驅物質;(VIII)是(IX)之前驅物質。合成的 (X),(XI)新鹽基雖尚未在天然界發現,但存在之可能性很大。另外在生物鹼性 成分分離過程中,由薄層色曾分析中也有發現(II)的存在。以上成份將提供抗菌、 抗腫瘤作用試驗。

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