1,3-Dipolar cycloaddition reactions of homochiral cyclic nitrones derived from 1-deoxynojirimycin
作者:Leon A.G.M van den Broek
DOI:10.1016/0040-4020(96)00094-4
日期:1996.3
The synthesis of nitrones 12, 19 and 20, derived from 1-deoxynojirimycin (1, dNM), using 2,2-dimethyldioxirane, is reported. In subsequent 1,3-dipolar cycloaddition reactions of nitrones 12 and 19 with phenyl isocyanate and trichloro acetonitrile the cycloadducts 13 and 15, ring-closed to C-1, and 14, 16, 21 and 22, which are ring-closed to C-5 of the dNM ring, were obtained. Cycloaddition reaction
硝酮的合成12,19和20,由1-脱氧野尻霉素(派生1,DNM)使用2,2-二二甲基二,则报告。在随后的硝酮12和19与异氰酸苯酯和三氯乙腈进行的1,3-偶极环加成反应中,环加成物13和15闭环为C-1,而14、16、21和22则闭环为C获得了-5个dNM环。在15 kbar压力下19和20与乙酸乙烯酯的环加成反应,得到环加合物23、24和25,是高度功能化的dNM衍生物,具有进一步合成的各种可能性。