Total Synthesis of Sialic Acid by a Sequential Rhodium-Catalyzed Aziridination and Barbier Allylation of D-Glycal
作者:Rujee Lorpitthaya、Sharad B. Suryawanshi、Siming Wang、Kalyan Kumar Pasunooti、Shuting Cai、Jimei Ma、Xue-Wei Liu
DOI:10.1002/anie.201104516
日期:2011.12.9
Acid test: Sialic acid Neu5Ac was synthesized in a regio and stereoselective manner from a glycal (see scheme) via a [1,2,3]‐oxathiazocane‐2,2‐dioxide intermediate. The sequential rhodium‐catalyzed aziridination/indium‐mediated Barbier allylation approach adopted offers a potentially flexible route to other sialic acid derivatives, since the oxathiazocane intermediate was compatible with a variety
酸测试:唾液酸Neu5Ac是通过[1,2,3]-恶二唑-2,2-二氧化物中间体从糖基(见方案)以区域和立体选择性的方式合成的。连续使用的铑催化的叠氮/铟介导的Barbier烯丙基化方法为其他唾液酸衍生物提供了一种潜在的灵活途径,因为草硫唑烷中间体可与多种亲核试剂相容。