Synthesis of an alpha-fucosidase inhibitor, 5a-carba-beta-L-fucopyranosylamine, and fucose-type alpha- and beta-DL-valienamine unsaturated derivatives |
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Authors: | Ogawa Seiichiro Watanabe Maiko Maruyama Ayako Hisamatsu Seiichi |
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Affiliation: | Department of Applied Chemistry, Faculty of Science and Technology, Keio University, Hiyoshi, Kohoku-ku, 223-8522, Yokohama, Japan. ogawa@applc.keio.ac.jp |
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Abstract: | Discovery of a very potent alpha-fucosidase inhibitor 5a-carba-alpha-L-fucopyranosylamine led to preparation of its beta-anomer and the respective unsaturated derivatives, fucose-type alpha- and beta-valienamines, in order to elucidate the structure-activity relationship of carba-aminosugar inhibitors of this kind. Compound was demonstrated to be a potent inhibitor (K(i)=2.0 x 10(-7) M, bovine kidney), possessing ca. one-tenth of the activity of the parent. Interestingly, and were found to be rather weak inhibitors, contrary to the expectations based on the activity relationships between the alpha-glucosidase inhibitors, alpha-glucose-type validamine and valienamine. |
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