N.m.r. studies of cycloamylose inclusion-complexes with p-substituted phenols |
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| Authors: | Yoshio Inoue Takehiro Okuda Yoshiaki Miyata Riichiro Chûjô |
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| Affiliation: | Department of Polymer Chemistry, Tokyo Institute of Technology, O-okayama 2-chome, Meguro-ku, Tokyo 152 Japan |
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| Abstract: | Aqueous solutions of inclusion complexes of host cyclomaltohexa- and cyclomaltohepta-ose (cyclohexa- and cyclohepta-amylose) with guest phenols p-substituted with Br, Cl, CN, NO2, CH3, CHO, and COOH have been studied by 1H- and 13C-n.m.r. spectroscopy. The stability of the complexes depends on the guests, the cycloamyloses, and the ionisation states of the host hydroxyl groups. The 1H data for the host protons in the complexes show that the guests are more deeply inserted into the cavity of cyclomaltoheptaose than into that of cyclomaltohexaose. |
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| Keywords: | To whom inquiries should be addressed |
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