Stereoselective Synthesis of Polyhydroxycycloheptanes and Their Phosphate Derivatives from 8-Oxabicyclo[3.2.1]octenes
作者:Dmitry A. Khlevin、Sergey E. Sosonyuk、Marina V. Proskurnina、Nikolay S. Zefirov
DOI:10.1002/ejoc.201201426
日期:2013.4
The first directed synthesis of seven-membered mono- and tris-phosphates is described. The key steps involve a DIBAL-H/DIBAL-Cl-mediated ring opening of 8-oxabicyclo[3.2.1]octenes in the presence of [Ni(acac)2] and stereoselective syn-dihydroxylation with NMO and OsO4. An enantioselective approach to ring opening has been examined with chiral phosphane. The phosphorylation of mono- and triols followed
描述了七元单磷酸酯和三磷酸酯的首次定向合成。关键步骤包括在 [Ni(acac)2] 存在下由 DIBAL-H/DIBAL-Cl 介导的 8-氧杂双环 [3.2.1] 辛烯的开环和与 NMO 和 OsO4 的立体选择性顺二羟基化。已使用手性磷烷研究了一种对映选择性开环方法。单醇和三醇的磷酸化然后去保护以高产率得到相应的磷酸盐,其结构类似于肌醇单磷酸酶 (IMPase) 和肌醇三磷酸受体配体的已知抑制剂。评估由此形成的单磷酸盐对IMPase的抑制活性。