Solid-Phase Synthesis of Pyrazolines and Isoxazolines with Sodium Benzenesulfinate as a Traceless Linker
作者:Yu Chen、Yulin Lam、Yee-Hing Lai
DOI:10.1021/ol0340888
日期:2003.4.1
text] The preparation of pyrazoline and isoxazoline derivatives with traceless solid-phase sulfone linker strategy is described. Key steps involved in the solid-phase synthetic procedure include (i) sulfinate S-alkylation, (ii) sulfone anion alkylation, (iii) gamma-hydroxy sulfone --> gamma-ketosulfone oxidation, and (iv) traceless product release via elimination-cyclization. A library of 12 pyrazolines
[反应:参见正文]描述了采用无痕固相砜接头策略的吡唑啉和异恶唑啉衍生物的制备。固相合成过程涉及的关键步骤包括(i)亚磺酸盐S-烷基化,(ii)砜阴离子烷基化,(iii)γ-羟基砜->γ-酮砜氧化,以及(iv)通过消除释放无痕产物-环化。合成了12个吡唑啉和异恶唑啉的文库。