Assembling heterocycle-tethered C-glycosyl and α-amino acid residues via 1,3-dipolar cycloaddition reactions

被引:131
作者
Dondoni, A [1 ]
Giovannini, PP [1 ]
Massi, A [1 ]
机构
[1] Univ Ferrara, Dipartmento Chim, Chim Organ Lab, I-44100 Ferrara, Italy
关键词
D O I
10.1021/ol048963g
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The 1,3-dipolar cycloadditions of C-glycosyl nitrile oxides and acetylenes to an alkyne and an azide, respectively, bearing a masked glycinyl moiety furnished disubstituted isoxazoles and triazoles. Unveiling the glycinyl group in these cycloadducts afforded C-glycosyl (x-amino acids in which the two bioactive entities were tethered through rigid five-membered heterocycles. Optimized entries to the same compounds involved the use of unmasked but protected alkyne- and azide-containing amino acids as the partners of 1,3-dipolar cycloadditions.
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页码:2929 / 2932
页数:4
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