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排序方式: 共有170条查询结果,搜索用时 15 毫秒
1.
《Bioorganic & medicinal chemistry letters》2014,24(11):2437-2439
Four new chromone alkaloids, chrotacumines G–J (1–4), have been isolated from the barks of Dysoxylum acutangulum. Their structures and absolute configurations were elucidated on the basis of NMR and CD data. Chrotacumines G and J (1 and 4) showed osteoclast differentiation inhibitory activity in a dose dependent manner. 相似文献
2.
Peter B. Oelrichs Michael W. Hill Peter J. Vallely John K. MacLeod Tadeusz F. Molinski 《Phytochemistry》1983,22(2):531-534
Four new tetranortriterpenes, meliatoxins A1, A2, B1 and B2 have been isolated and identified as toxic constituents of the fruit of Melia azedarach L. var. australasica. Toxicity and pathological results confirm that the meliatoxins are responsible for most but not all of the symptoms resulting from the ingestion of whole fruit. 相似文献
3.
广东楝科植物分类的初步研究 总被引:4,自引:0,他引:4
陈锡沐;梁宝汗;李秉涛 《武汉植物学研究》1986,4(2):167-194
本文是对广东楝科植物种类的初步整理、研究,记载了16属33种7交种,包括本省产的13属27种7变种和外来引种的3属6种。其中有1个新变种(封开地黄连Munronia hainanensis How et T. Chen var. microphyllina X. M. Chen),3个新组合(曾椤Amoora tsangii (Merr.) X. M. Chen, 雷楝Reinwardtiodendron dubium (Merr.) X. M. Chen, 毛香椿Toona sinensis (A. Juss.) M. J. Roem. var. schensiana (C. DC.) X. M. Chen), 3个分布新记录[雷楝属Reinwardtiodendron (我国新记录),鹧鸪花Trichilia connaroides (W. et A.) Bentv. var. connaroides(广东新记录),海南(木坚)木Dysoxylvm hainanense Merr. var. hainanense(广东大陆新记录)]. 相似文献
4.
Shanhuan Zhao 《Insect Science》1994,1(4):365-374
Abstract An overview is presented on recent (1989–19911 investigations on insecticidal plants in China, specially in South China. The main emphasis was laid on studies of Meliaceae including Azadirachta indica, Melia azedarach and M. toosendan , as well as on Rhododendron molle, Derris elliptica, Tephrosia voglii, Ajuga nipponensis, Plumbago idea and Celastrus anplatus . Research work on the bioactivities and application of essential oils from plants for the control of stored-grain insects is also discussed. The results of these investigations reveal a great potential of the active ingredients of a number of Chinese plants for integrated pest management, as well as for using these natural product models as guides for the synthesis of a novel class of insecticides. 相似文献
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The seeds of Trichilia welwitschii C.DC. (Meliaceae) yielded three limonoids, dregeanin DM4 (1), reported here from a natural source for the first time, the known rohituka 3 (2) and trichilia lactone D5 (3). The bark yielded 28,29-dinorcycloart-24-ene-3,4,6-triol (4), sitosterol-3-O-β-d-glucoside, 4-hydroxy-N-methyl-l-proline, stigmasterol and sitosterol. 相似文献
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Patrícia A. de Campos Braga Márcio Santos Soares M. Fátima das G.F. da Silva Paulo C. Vieira João B. Fernandes Antônio L. Pinheiro 《Biochemical Systematics and Ecology》2006
The stem of Cabralea canjerana (Vell.) Mart. yielded three new dammarane triterpenes 20S,24S-epoxy-7β,25-dihydroxy-3,4-secodammar-4(28)-en-3-oic acid, 20S,24S-epoxy-7β,15α,25-trihydroxy-3,4-secodammar-4(28)-en-3-oic acid and 20S,24R-epoxy-7β,22ξ,25-trihydroxy-3,4-secodammar-4(28)-en-3-oic acid, which were identified on the basis of spectroscopic methods. The known dammarane triterpenes ocotillone, eichlerianic acid, shoreic acid and the sterols sitosterol, campesterol, stigmasterol, sitostenone and stigmast-5-en-3-one were also isolated and identified. The branches yielded the above three known dammaranes and eichlerialactone. The dammaranes in C. canjerana display strong similarities with Trichilieae tribe, which contains several dammaranes. The data reported herein thus provide firm support for placing Cabralea within the subfamily Melioideae, Trichilieae tribe. 相似文献
10.
Azadirachtin, a triterpenoid of Azadirachta indica with feeding and growth disruptive effects on certain insects, has been found in Melia azedarach. 相似文献