手性铝试剂促进的β-环氧醇动力学拆分研究

首次以手性联萘酚修饰的三乙基铝为催化剂对消旋的β-环氧醇的动力学拆分进行了研究, 初步研究结果表明其回收原料的ee值可达60%. 同时研究了不同条件下三乙基铝与手性配体形成的手性路易斯酸对β-环氧醇的动力学拆分的影响, 并探讨了在三乙基铝催化下的反应机理.     

First Synthesis of （＋）-2,14-Deoxyalatol from α-Santonin

A novel and general approach for synthesis of the multi-oxygenated dihydrofuran sesquiterpenes has been developed starting from santonin. The key steps involve: the strategic acid-catalyzed double-bond shifting affording 4, the novel base-promoted epoxide rearrangement of 5 generating two key functionals (the C5-OH and the Δ^7,11 double bond), and the stereoselective cyclization of tetrahydrofuran ring without pre-controlling the stereochemistry of C-7. As an example of this approach, synthesis of ( )-2,14-deoxyalatol was described in detail.     

苯并螺环β-溴代酮Wagner-Meerwein重排反应研究及其在（±）-Colchicine形式合成中的应用

报道了在AgBF4促进下苯并螺环β-溴代酮的Wagner-Meerwein重排反应,从而发展了一条简捷新颖的构筑天然产物中广泛存在的n,7,6-三环骨架的方法.作为该反应的应用,合成了（±）-colchicine的7,7,6-三环母核,完成了（±）-colchicine的形式合成.