Selective mono-O-sulfonylation of A,B-di-altro- β-cyclodextrin by utilizing restricted orientation of a guest-type sulfonylating reactant in the elliptically distorted cavity: the 2-O- and 3-O-2-naphthalenesulfonates as a versatile scaffold to prepare artificial enzymes with controlling substrate orientation |
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Authors: | Kahee Fujita Wen-Hua Chen Toshihiro Fujioka De-Qi Yuan |
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Institution: | a Department of Molecular Medicinal Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan b Faculty of Pharmaceutical Sciences, Fukuoka University, Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan |
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Abstract: | A,B-di-altro-β-cyclodextrin, which has 21 different hydroxyl groups, was selectively sulfonylated by 2-naphthalenesulfonyl chloride at the 2A-OH of the altrose residue and the 3G-OH of the glucoside residue adjacent to the altroside residue. The latter sulfonate provides for the first time a possibility for the synthesis of functional cyclodextrins that have two altrose residues adjacent to the functionalized one (either of glucose type or of altrose type) to control the orientation of substrate. |
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Keywords: | Cyclodextrin Altrose Modification Sulfonylation |
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