Synthesis of <scp>D</scp>
-Desosamine and Analogs by Rapid Assembly of 3-Amino Sugars
作者:Ziyang Zhang、Takehiro Fukuzaki、Andrew G. Myers
DOI:10.1002/anie.201507357
日期:2016.1.11
D‐Desosamine is synthesized in 4 steps from methyl vinyl ketone and sodium nitrite. The key step in this chromatography‐free synthesis is the coupling of (R)‐4‐nitro‐2‐butanol and glyoxal (trimeric form) mediated by cesium carbonate, which affords in crystalline form 3‐nitro‐3,4,6‐trideoxy‐α‐D‐glucose, a nitro sugar stereochemically homologous to D‐desosamine. This strategy has enabled the syntheses
D-去糖胺是由甲基乙烯基酮和亚硝酸钠四步合成的。这种无色谱合成的关键步骤是碳酸铯介导的(R)-4-硝基-2-丁醇与乙二醛(三聚体形式)的偶联,其结晶形式为3-硝基-3,4,6- trideoxy-α- D-葡萄糖,一种与D-去糖胺立体化学同源的硝化糖。这种策略使合成一系列类似的3-硝基糖成为可能。在每种情况下,3-硝基糖都是通过结晶获得的纯净形式。