Pd-catalyzed coupling reaction of glycosylamines with 6-chloropurines:: Synthesis of 6-(β-D-mannopyranosylamino)-9H-purine and its β-D-gluco isomer, N-glycoside models for spicamycin and septacidin
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Chida, N
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Keio Univ, Fac Sci & Technol, Dept Appl Chem, Kohoku Ku, Yokohama, Kanagawa 2238522, JapanKeio Univ, Fac Sci & Technol, Dept Appl Chem, Kohoku Ku, Yokohama, Kanagawa 2238522, Japan
Chida, N
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Suzuki, T
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Keio Univ, Fac Sci & Technol, Dept Appl Chem, Kohoku Ku, Yokohama, Kanagawa 2238522, JapanKeio Univ, Fac Sci & Technol, Dept Appl Chem, Kohoku Ku, Yokohama, Kanagawa 2238522, Japan
Suzuki, T
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Tanaka, S
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Keio Univ, Fac Sci & Technol, Dept Appl Chem, Kohoku Ku, Yokohama, Kanagawa 2238522, JapanKeio Univ, Fac Sci & Technol, Dept Appl Chem, Kohoku Ku, Yokohama, Kanagawa 2238522, Japan
Tanaka, S
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Yamada, I
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Keio Univ, Fac Sci & Technol, Dept Appl Chem, Kohoku Ku, Yokohama, Kanagawa 2238522, JapanKeio Univ, Fac Sci & Technol, Dept Appl Chem, Kohoku Ku, Yokohama, Kanagawa 2238522, Japan
Yamada, I
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[1] Keio Univ, Fac Sci & Technol, Dept Appl Chem, Kohoku Ku, Yokohama, Kanagawa 2238522, Japan
The first example of preparation of 6-(beta-D-mannopyranosylamino)-9H-purine (8), whose N-glycosidic linkage corresponds to a natural antibiotic, spicamycin, by Pd-catalyzed coupling reaction of a mannopyranosylamine with 9-protected-6-chloropurine, followed by deprotection, is described. Its beta-D-gluco isomer (11) was also synthesized. This work established the procedure to construct the novel N-glycoside, in which the pyranose unit is connected to the amino group at C(6) of adenine moiety. (C) 1999 Elsevier Science Ltd. All rights reserved.