由過山香根部分離出50個化合物，經由光譜分析、化學方法及文獻比對後鑑定化合物的構造，分別為：3-methyl carbazole (2),murrayafoline A (5), clausine-P (6), girinimbine (8), carbazole-3-carbaldehyde (12), 3-formyl-1-hydroxycarbazole (15),murrayanine (16), 7-methoxy-9H-carbazole-3-carbaldehyde (17), clausine A (25), 7-methoxy-O- methylmukonal (28), 2-ydroxy-6,8-dimethoxy-9H-carbazole-3- carbaldehyde (30) , 2-hydroxy-1- (3-methyl-but-2-enyl)carbazole-3- carbaldehyde (37),clausine K (55), 2-hydroxy carbazole-3-carboxylic acid methyl ester (57), clausine E (58), mukonine (62), clausine C (63), clausine F (67), 8,8-dimiethyl-8H-pyrano[3,2-g]chromen-2-one (161), 5-methyoxy-8,8-dimethyl-8H-pyrano[3,2-g]chromen-2-one (163), 10- (1,1-dimethyl-allyl)-5-hydroxy-8,8-dimethyl-8H-pyrano-[3,2-g]chromen-2-one (166), hassanidin(168),kinocoumarin (169), 3,10-bis-(1,1-dimethyl allyl)-5-hydroxy-8,8-dimethyl-8H-pyrano[3,2-g]chromen-2-one (170), 10-(1,1-dimiethyl allyl)-5-hydroxy-8,8 dimethyl-7,8-dihydropyrano[3,2-g]chromene-2,6-dione (172), 1-O-methylcalusenolide (208), zapoterin (210), 3-methyl-carbazol-1-ol (240), 2-methyoxy carbazole-3-carbaldehyde (241), murrayacine (242), chrestifoline-A (243), clausenatine-A (244), N-(γ,γ-dimethylallyl)-1-methoxy-3-methylcarbazole (245), clausenanine-A (246*), clausenaine-B (247*), clausenanine-C (248*), clausebismine-A (249*), clausebismine-B (250*), clausebismine-C (251*), clausebismine-D (252*), clausetrimine-A (253*), clausecavine-A (254*), suberosin (255), marshdimerin (256), bisnorponcitrin (257), 5-O-acetylclausarin (258*), clausenabismarin-A (259*), methyl-p-bezenoate (260), δ-cuparenol (261), β-sitosterol&stigmasterol (262, 263)；其中天然物首次發現之新化合物有3個：(250*), (253*), (258*)；新化合物有7個：(246*), (247*), (248*), (249*), (251*), (252*), (259*)；及新骨架之化合物1個：(254*)。

A series of chromatographic separation has led to the isolation of fifty compounds from the acetone extract on the root of Clausena excavata. All compounds were characterized by comprehensive analyses of their 1D and 2D NMR and mass spectral data. They were named: 3-methyl carbazole (2), murrayafoline A (5), clausine-P (6), girinimbine (8), carbazole-3-carbaldehyde (12), 3-formyl-1-hydroxycarbazole (15), murrayanine (16), 7-methoxy-9H-carbazole-3-carbaldehyde (17), clausine A (25), 7-methoxy-O-methylmukonal (28), 2-hydroxy-6,8-dimethoxy-9H-carbazole-3-carbaldehyde (30) , 2-hydroxy-1-(3-methyl-but-2-enyl)carbazole-3-carbaldehyde (37), clausine K (55), 2-hydroxy carbazole-3-carboxylic acid methyl ester (57), clausine E (58), mukonine (62), clausine C (63), clausine F (67), 8,8-dimiethyl-8H-pyrano[3,2-g]chromen-2-one (161), 5-methyoxy-8,8-dimethyl-8H-pyrano[3,2-g]chromen-2-one (163), 10-(1,1-dimethyl-allyl)-5-hydroxy-8,8-dimethyl-8H-pyrano-[3,2-g]chromen-2-one (166), hassanidin (168), kinocoumarin (169), 3,10-bis-(1,1-dimethyl allyl)-5-hydroxy-8,8-dimethyl-8H-pyrano[3,2-g] chromen-2-one (170), 10-(1,1-dimiethyl allyl)-5-hydroxy-8,8 dimethyl-7,8-dihydropyrano[3,2-g]chromene-2,6-dione (172), 1-O-methylcalusenolide (208), zapoterin (210), 3-methyl-carbazol-1-ol (240), 2-methyoxy carbazole-3-carbaldehyde (241), murrayacine (242), chrestifoline-A (243), clausenatine-A (244), N-(γ,γ-dimethylallyl)-1-methoxy-3-methylcarbazole (245), clausenanine-A (246*), clausenaine-B (247*), clausenanine-C (248*), clausebismine-A (249*), clausebismine-B (250*), clausebismine-C (251*), clausebismine-D (252*), clausetrimine-A (253*), clausecavine-A (254*), suberosin (255), marshdimerin (256), bisnorponcitrin (257), 5-O-acetylclausarin (258*), clausenabismarin-A (259*), methyl-p-bezenoate (260), δ-cuparenol (261), β-sitosterol&stigmasterol (262, 263). Among these isolates, compounds (250*), (253*), (258*) were reported for the first time from natural sources. And seven compounds which named clausenanine-A (246*), clausenaine-B (247*), clausenanine-C (248*), clausebismine-A (249*), clausebismine-C (251*), clausebismine-D (252*), clausenabismarin-A (259*) are new compounds. A new compound with new skeleton was named clausecavine-A (254*).

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