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Andhraxylocarpins A–E: Structurally Intriguing Limonoids from the True Mangroves Xylocarpus granatum and Xylocarpus moluccensis
Chemistry - A European Journal ( IF 3.9 ) Pub Date : 2012-09-24 , DOI: 10.1002/chem.201202356 Jun Li , Min-Yi Li , Torsten Bruhn , Daniel C. G. Götz , Qiang Xiao , Tirumani Satyanandamurty , Jun Wu , Gerhard Bringmann
Chemistry - A European Journal ( IF 3.9 ) Pub Date : 2012-09-24 , DOI: 10.1002/chem.201202356 Jun Li , Min-Yi Li , Torsten Bruhn , Daniel C. G. Götz , Qiang Xiao , Tirumani Satyanandamurty , Jun Wu , Gerhard Bringmann
Five new limonoids, including andhraxylocarpins A and B (1 and 2) which contain a 9‐oxa‐tricyclo[3.3.2.17, 10]undecane‐2‐ene motif, andhraxylocarpins C and D (3 and 4), which contain a (Z)‐bicyclo[5.2.1]dec‐3‐en‐8‐one substructure, and andhraxylocarpin E (5), which contains a tricyclo[3.3.1.13, 6]decane‐9‐one scaffold, were isolated from the seeds of two true mangroves, Xylocarpus granatum and Xylocarpus moluccensis, that were collected in the estuaries of Andhra Pradesh, India. The absolute configurations of these compounds were determined by extensive NMR investigations, single‐crystal X‐ray diffraction analysis, and by circular dichroism and optical rotatory dispersion spectroscopy, in combination with quantum‐chemical calculations. The pronounced structural diversity of limonoids from these mangroves might originate from environmental factors.
中文翻译:
真核生物A–E:真正的红树林中的木犀草类植物Xylocarpus granatum和Xylocarpus moluccensis
五个新柠檬苦素,包括含有9-氧杂-三环[3.3.2.1 7,10 ]十一烷-2-烯基序的衣原木A和B(1和2),以及衣原木C和D(3和4),其中包含(Z)-双环[5.2.1] dec-3-en-8-one的子结构,并从其中分离出含有三环[3.3.1.1 3,6 ] decane-9-one支架的衣原木素E(5)。两种真正的红树林种子木香和木香的种子,收集在印度安得拉邦的河口。这些化合物的绝对构型是通过广泛的NMR研究,单晶X射线衍射分析,圆二色性和旋光色散光谱以及量子化学计算确定的。这些红树林中柠檬苦素类化合物的明显结构多样性可能源于环境因素。
更新日期:2012-09-24
中文翻译:
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真核生物A–E:真正的红树林中的木犀草类植物Xylocarpus granatum和Xylocarpus moluccensis
五个新柠檬苦素,包括含有9-氧杂-三环[3.3.2.1 7,10 ]十一烷-2-烯基序的衣原木A和B(1和2),以及衣原木C和D(3和4),其中包含(Z)-双环[5.2.1] dec-3-en-8-one的子结构,并从其中分离出含有三环[3.3.1.1 3,6 ] decane-9-one支架的衣原木素E(5)。两种真正的红树林种子木香和木香的种子,收集在印度安得拉邦的河口。这些化合物的绝对构型是通过广泛的NMR研究,单晶X射线衍射分析,圆二色性和旋光色散光谱以及量子化学计算确定的。这些红树林中柠檬苦素类化合物的明显结构多样性可能源于环境因素。