The interaction of the analgesic prosidol [1-(2-ethoxyethyl)-4-phenyl-4-propionyl-oxypiperidine] and the anaesthetic kazcaine [1-(2-ethoxyethyl)-4-ethynyl-4-benzoyloxypiperidine] with β-cyclodextrin (β-CD) in aqueous solutions has been studied by nuclear magnetic resonance (NMR), ultraviolet (UV) and infrared (IR) spectroscopy. The composition and structure of the formed guest:β-CD inclusion complexes have been determined and were found to have a molar ratio of 1:2, with the guest molecule located in the cavity formed by two β-CD molecules in head-to-head orientation, with the O(2), O(3) rims interacting. The phenyl and ethoxyethyl substituents of the guests are in contact with the β-CD molecules. In contrast to prosidol–base and kazcaine–base the complexes with β-CD show a higher analgesic and local anaesthetic activity.
镇痛药普西多尔[1-(
2-乙氧基乙基)-4-苯基-4-丙酰氧基
哌啶]和
麻醉剂卡兹
卡因[1-(
2-乙氧基乙基)-4-
乙炔基-4-苯甲酰氧基
哌啶]与β-
环糊精的相互作用
水溶液中的 (β-CD) 已通过核磁共振 (NMR)、紫外 (UV) 和红外 (IR) 光谱进行了研究。对所形成的客体:β-CD包合物的组成和结构进行了测定,发现其摩尔比为1:2,客体分子位于两个β-CD分子头对头形成的空腔内。头部方向,O(2)、O(3) 边缘相互作用。客体的苯基和乙氧基乙基取代基与β-CD分子接触。与 Prosidol 基和 Kazcaine 基相比,β-CD 复合物表现出更高的镇痛和局部麻醉活性。