Total syntheses of hyacinthacine A2 and 7-deoxycasuarine by cycloaddition to a carbohydrate derived nitrone

被引:146
作者
Cardona, F [1 ]
Faggi, E [1 ]
Liguori, F [1 ]
Cacciarini, M [1 ]
Goti, A [1 ]
机构
[1] Univ Florence, Dipartimento Chim Organ Ugo Schiff, I-50019 Sesto Fiorentino, Firenze, Italy
关键词
glycosidases inhibitors; pyrrolizidine alkaloids; nitrones; carbohydrates; enantiospecific synthesis;
D O I
10.1016/S0040-4039(03)00239-9
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Practical syntheses of nitrone 8 by two different approaches from sugars are reported. Its use as a versatile intermediate in highly selective 1,3-dipolar cycloaddition reactions constitutes the key step for novel total syntheses of hyacinthacine A(2) (3) and 7-deoxycasuarine (20) by simple transformations of a common isoxazolidine adduct. (C) 2003 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:2315 / 2318
页数:4
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