| Structure of Palisadin B,C_(15)H_(24)Br_2O |
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| 作者姓名： | Huang You-Qing Hu Sheng-Zhi |
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| 作者单位： | Huang You-Qing; Hu Sheng-Zhi(Department of Chemistry，Xiamen University，Xiamen，361005)Zhong Yong-Li; Su Jing-Yu(Department of Chemistry，Zhongshan University，Guangzhou，510275) |
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| 摘 要： | ＳｔｒｕｃｔｕｒｅｏｆＰａｌｉｓａｄｉｎＢ，Ｃ_（１５）Ｈ_（２４）Ｂｒ_２Ｏ￥ＨｕａｎｇＹｏｕ－Ｑｉｎｇ；ＨｕＳｈｅｎｇ－Ｚｈｉ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔｒｙ，ＸｉａｍｅｎＵｎｉｖｅｒｓｉｔｙ，Ｘｉａｍｅｎ，３６１００５）ＺｈｏｎｇＹｏ?..
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Structure of Palisadin B,C_(15)H_(24)Br_2O |
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| Huang You-Qing, Hu Sheng-Zhi.Structure of Palisadin B,C_(15)H_(24)Br_2O[J].Chinese Journal of Structural Chemistry,1994(1). |
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| Authors: | Huang You-Qing Hu Sheng-Zhi |
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| Abstract: | Palisadin B,a brominated sesquiterpenoid, was isolated from the marine alga genus Laurencia Karlae Zhang et Xia collected from the Nansha Islands of the South China Sea. The structure was examined by MS and NMR spectra and confirmed by X-ray diffraction analysis.C_(15) H_(24) Br_2O, Mr=380.18, tetragonal,P4_12_12, a= 10. 812(3) ,c=27. 436(7),V=3027. 1, Z=8, D_c= 1. 948Mg. m￣(-3) ,μ(MoKa) = 61. 81 cm￣(-1), F(000) =1900,T=296K,final R=0. 050 for 1082 observed reflections. The molecule is composed of a cyclohexane ring fused with a seven-membered cyclic ether, and the latter exhibits a twist boat conformation.The molecules in the crystal lattice are held together by van der Waals forces (m. p.367-368K). Bond lengths and angles are internally consistent and the van der Waals interactions are normal. |
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| Keywords: | molecular structure crystal structure palisadin B brominated sesquiterpenoid cyclic ether cyclohexane ring marine alga |
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