Reductive Ring Opening of <i>o</i>-Nitrobenzylidene Acetals of Monosaccharides: Synthesis and Photolysis of Some Photolabile Sugars
作者:Soichiro Watanabe、Takashi Sueyoshi、Megumi Ichihara、Chiaki Uehara、Michiko Iwamura
DOI:10.1021/ol0068952
日期:2001.1.1
[figure: see text] A 6-O-o-nitrobenzyl methylglucoside and methylmannoside were synthesized by reacting 4,6-O-o-nitrobenzylidene acetals with triethylsilane and boron trifluoride etherate. A 2,6-di-O-o-nitrobenzyl and a 3,6-di-O-o-nitrobenzyl methylmannoside were obtained from a 2,3:4,6-di-O-o-nitrobenzylidene methylmannoside by the same method. The photolabile sugars obtained were deprotected by irradiation
[图:见正文]通过将4,6-Oo-硝基亚苄基乙缩醛与三乙基硅烷和三氟化硼醚化物反应,合成了6-Oo-硝基苄基甲基葡萄糖苷和甲基甘露糖苷。通过相同的方法,从2,3:4,6-二-O-硝基苄基甲基甘露糖苷获得2,6-二-O-硝基苄基甲基和3,6-二-Oo-硝基苄基甲基甘露糖苷。通过在350nm下照射使获得的光不稳定糖脱保护,得到甲基糖苷。