Lu C S, Hu C J, Yu Y, Meng Q J
Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, Nanjing University, P. R. China.
Chem Pharm Bull (Tokyo). 2000 Jan;48(1):56-9. doi: 10.1248/cpb.48.56.
Inclusion compounds of some 4-substituted benzoic acid and benzaldehyde drugs with beta-cyclodextrin were prepared and characterized by IR spectroscopy, powder X-ray diffraction, thermogravimetry, and 1H-NMR spectroscopy. The thermal stability and chemical stability of these drugs were strikingly improved after inclusion. The effect of inclusion on the chemical-shifts of protons H-3 and H-5 in the NMR spectroscopy is discussed. Using the relative shift theory, the preferred inclusion mode was proposed. The center of the aromatic ring of the drug molecule was considered to be located in the cavity 1.2 A inside from the H-5 plane of beta-cyclodextrin.
制备了一些4-取代苯甲酸和苯甲醛类药物与β-环糊精的包合物，并通过红外光谱、粉末X射线衍射、热重分析和1H-NMR光谱对其进行了表征。包合后这些药物的热稳定性和化学稳定性显著提高。讨论了包合对NMR光谱中质子H-3和H-5化学位移的影响。利用相对位移理论，提出了优先包合模式。药物分子芳香环的中心被认为位于距β-环糊精H-5平面内部1.2 Å的腔内。
