Clathrate formation of gossypol: The structure of the complex of gossypol with tropolone |
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| Authors: | S A Talipov B T Ibragimov Y Ohashi J Harada M I Saleh |
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| Institution: | (1) Institute of Bioorganic Chemistry, Tashkent, Uzbekistan;(2) Department of Chemistry, Tokyo Institute of Technology, O-okayama, Mesuro-ku, Tokyo 152-8550, Japan;(3) School of Chemical Sciences, Malaysian University of Science, 11800 USM Penang, Malaysia |
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| Abstract: | The clathrate of gossypol with tropolone is prepared for the first time and studied by X-ray diffraction. The structure is determined and refined using 7307 reflections (Siemens SMART/CCD diffractometer). The crystals are monoclinic, C30H30O8 · 2C7H6O2, a = 35.5892(1) Å, b = 12.8893(2) Å, c = 18.5910(2) Å, β = 118.54(3)°, Z = 8, space group C2/c, and R = 0.058. Each gossypol molecule is linked to two tropolone molecules through hydrogen bonds. The host (gossypol) and guest (tropolone) molecules form separate bilayers that are parallel to the bc plane and alternate along the a-axis. |
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