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Anne Adsersen Ulla W. SmittHenrik T. Simonsen Søren Brøgger ChristensenJerzy W. Jaroszewski 《Biochemical Systematics and Ecology》2007
Four prenylated acetophenones 2,6-dihydroxy-4-geranyloxyacetophenone (1), 4-geranyloxy-2,6,β-trihydroxyacetophenone (2), 2,6-dihydroxy-4-geranyloxy-3-prenylacetophenone (3), and 4-geranyloxy-3-prenyl-2,6,β-trihydroxyacetophenone (4) have for the first time been isolated from Melicope obscura (1 and 2) and Melicope obtusifolia ssp. obtusifolia var. arborea (3 and 4). The distribution of prenylated acetophenones in Rutaceae is reviewed and the results, including the new records, indicate that prenylated acetophenones are valuable as chemotaxonomic markers for the subfamily Rutoideae, tribe Xanthoxyleae sensu Engler. 相似文献
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Henrik T. Simonsen Michael D. Larsen Merete W. Nielsen Anne Adsersen Carl Erik Olsen Dominique Strasberg Ulla W. Smitt Jerzy W. Jaroszewski 《Phytochemistry》2002,60(8)
Three new natural products, 3,8-dimethoxy-5,7-dihydroxy-3′,4′-methylenedioxyflavone, 3,6,8-trimethoxy-5,7-dihydroxy-3′,4′-methylenedioxyflavone and 3,6,8,3′,4′-pentamethoxy-5,7-dihydroxyflavone were isolated from Melicope coodeana syn. Euodia simplex (Rutaceae) along with 3,6,3′-trimethoxy-5,7,4′-trihydroxyflavone and 3,3′-dimethoxy-5,7,4′-trihydroxyflavone. The structural assignments are based on 1H and 13C NMR data, including discussion of the chemical shifts of C-2 in 3,5-dihydroxy- and 3-methoxy-5-hydroxyflavones. The presence of highly methoxylated and methylenedioxyflavones is characteristic of the genus Melicope, and the present findings support the recent transfer of Euodia simplex to Melicope. 相似文献
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Yamamoto M Akita T Koyama Y Sueyoshi E Matsunami K Otsuka H Shinzato T Takashima A Aramoto M Takeda Y 《Phytochemistry》2008,69(7):1586-1596
From a 1-BuOH-soluble fraction of the MeOH extract of leaves of Euodia meliaefolia, collected in Okinawa, seven megastigmane glucosides, named euodionosides A-G, were isolated together with three known megastgmane glucosides, and two aliphatic and three phenolic compounds. Their structures were elucidated through a combination of spectroscopic analyses and application of the modified Mosher's method. 相似文献
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用"远端羧基的化学修饰"、色谱-质谱方法分离鉴定了楝叶吴茱萸和臭辣树种子油中的十八碳不饱和脂肪酸,含常见的亚油酸和不常见的10-十八碳烯酸,以及在植物中首次发现的9,13,15-十八碳三烯酸.楝叶吴株萸和臭辣树种子油的脂肪酸组成(%)分别为:棕榈酸10.1,10.7;硬脂酸1.0,1.9;棕榈油酸21.2,20.7;10-十八碳烯酸28.5,31.7;亚油酸24.2,17.5;9,13,15-十八碳三烯酸15.0,14.9. 相似文献
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Paul Pui‐Hay BUT Alice Wing‐Sem POON Pang‐Chui SHAW Mark P. SIMMONS Harald GREGER 《植物分类学报:英文版》2009,47(2):144-150
The treatment of Rutaceae in the Chinese flora chose to follow Engler in recognizing Rutoideae and Toddalioideae as two separate subfamilies. Morphological and chemical comparisons, however, suggested grouping those two subfamilies in one subfamily, Rutoideae. This move has received support from molecular phylogenetic analyses, which also showed that the Chinese taxa in Euodia should be placed in Tetradium and Melicope following Hartley. Investigations into the chemistry and molecular phylogeny of Murraya also indicated that the species in the section Bergera without yuehchukene should be removed from Murraya. These findings clearly show the value of molecular cladistics to the taxonomy of Rutaceae in China and also directions for further investigations. 相似文献
6.
Simonsen HT Larsen MD Nielsen MW Adsersen A Olsen CE Strasberg D Smitt UW Jaroszewski JW 《Phytochemistry》2002,60(8):817-820
Three new natural products, 3,8-dimethoxy-5,7-dihydroxy-3′,4′-methylenedioxyflavone, 3,6,8-trimethoxy-5,7-dihydroxy-3′,4′-methylenedioxyflavone and 3,6,8,3′,4′-pentamethoxy-5,7-dihydroxyflavone were isolated from Melicope coodeana syn. Euodia simplex (Rutaceae) along with 3,6,3′-trimethoxy-5,7,4′-trihydroxyflavone and 3,3′-dimethoxy-5,7,4′-trihydroxyflavone. The structural assignments are based on 1H and 13C NMR data, including discussion of the chemical shifts of C-2 in 3,5-dihydroxy- and 3-methoxy-5-hydroxyflavones. The presence of highly methoxylated and methylenedioxyflavones is characteristic of the genus Melicope, and the present findings support the recent transfer of Euodia simplex to Melicope. 相似文献
7.
Paul Pui-Hay BUT Alice Wing-Sem POON Pang-Chui SHAW Mark P. SIMMONS Harald GREGER 《植物分类学报》2009,47(2)
The treatment of Rutaceae in the Chinese flora chose to follow Engler in recognizing Rutoideae and Toddalioideae as two separate subfamilies. Morphological and chemical comparisons, however, suggested group-ing those two subfamilies in one subfamily, Rutoideae. This move has received support from molecular phyloge-netic analyses, which also showed that the Chinese taxa in Euodia should be placed in Tetradium and Melicope following Hartley. Investigations into the chemistry and molecular phylogeny of Murraya also indicated that the species in the section Bergera without yuehchukene should be removed from Murraya. These findings clearly show the value of molecular cladistics to the taxonomy of Rutaceae in China and also directions for further inves-tigations. 相似文献
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