关键词: 氨基糖苷, 氨基糖苷, 氨基糖苷, 核糖霉素, 核糖霉素, 核糖霉素, 环氨基甲酸酯, 环氨基甲酸酯, 环氨基甲酸酯, 选择性, 选择性, 选择性, 衍生物, 衍生物, 衍生物

Abstract:

Aim To develop a novel selective protection strategy for the synthesis of ribostamycin cyclic carbamate derivatives. Methods Ribostamycin protected by carbobenzoxy group was treated with NaH, to give different protected intermediates under respective controllable cyclization reaction conditions. New ribostamycin derivative was obtained after the cleavage of carbobenzoxy groups. Result The novel selective protection of ribostamycin was achieved by the synthesis of protected intermediates. New ribostamycin derivative was obtained, but showed no expected antibacterial activity. Conclusion Several ribostamycin cyclic carbamate derivatives were obtained by novel selective protection strategy, which shows the practicability and convenience of the protection strategy. But these new ribostamycin derivatives containing cyclic carbamates structure may not be an ideal leading compound for antibiotic activity.

Key words: Aminoglycoside, Aminoglycoside, Ribostamycin, Ribostamycin, Cyclic carbamate, Cyclic carbamate, Selectivity, Selectivity, Derivatives, Derivatives