Wang的对映选择性硫脲催化的螺旋环化为放线菌Actinoalloteichus cyanogriseus的海洋天然产物氰化物的第一个四环类似物铺平了道路。所述合成包括从亚烷基吲哚酮开始的七个步骤。(E)-苯乙烯基侧链的安装面临区域化学问题,这是通过事先转化为乙内酰脲并采用巴蒂条件来避免的。螺二氢吲哚吡咯并[1,2- c ]咪唑和氰化物的ECD光谱比较证实了天然产物的绝对构型。
Magnesium Complexes as Highly Effective Catalysts for Conjugate Cyanation of α,β-Unsaturated Amides and Ketones
作者:Jinlong Zhang、Xihong Liu、Rui Wang
DOI:10.1002/chem.201304835
日期:2014.4.22
Asymmetric cyanation of trimethylsilyl cyanide (TMSCN) with α,β‐unsaturated amides and ketones, respectively, catalyzed by bifunctional mononuclear 1,1′‐bi‐2‐naphthol (BINOL)–Mg and binuclear bis(prophenol)–Mg catalysts was realized. A series of synthetically important 1,4‐cyano products were obtained with good to high enantioselectivities (up to 97 % ee).
A Unique Approach to the Concise Synthesis of Highly Optically Active Spirooxazolines and the Discovery of a More Potent Oxindole-Type Phytoalexin Analogue
作者:Xianxing Jiang、Yiming Cao、Yiqing Wang、Luping Liu、Fangfang Shen、Rui Wang
DOI:10.1021/ja106349m
日期:2010.11.3
Drug-lead synthesisthroughrapid construction of chiral molecular complexity around the biologically relevant framework using a highly efficient strategy is a key goal of organic synthesis. Molecules bearing a spirooxindole-type framework exhibit important bioactivities. Herein, we present a highly efficient and convenient strategy that allows rapid construction of unique optically active spiro[oxazoline-3
Enantioselective Michael/Cyclization Reaction Sequence: Scaffold-Inspired Synthesis of Spirooxindoles with Multiple Stereocenters
作者:Yiming Cao、Xianxing Jiang、Luping Liu、Fangfang Shen、Futing Zhang、Rui Wang
DOI:10.1002/anie.201104216
日期:2011.9.19
A‐spiro‐ing: The title reaction of α‐isothiocyanato imides and methyleneindolinones has been realized for the first time using 1 as the catalyst. This newly developed synthetic method provides a simple, efficient, and environmentally friendly way to access, in an enantioselective manner, densely functionalized spirooxindoles having three contiguous stereogenic centers.
Catalytic Enantioselective Synthesis of α,β-Diamino Acid Derivatives
作者:Le Li、Madhu Ganesh、Daniel Seidel
DOI:10.1021/ja9034494
日期:2009.8.26
Highly enantio- and diastereoselective organocatalytic Mannich additions of alpha-isothiocyanato imides to sulfonyl imines are reported. Enantiomerically enriched syn-alpha,beta-diamino acidderivatives can be obtained in excellent yields using catalyst loadings as low as 0.25 mol %.
Catalytic enantioselective aldol additions of α-isothiocyanato imides to α-ketoesters
作者:Matthew K. Vecchione、Le Li、Daniel Seidel
DOI:10.1039/c0cc00556h
日期:——
A readily available bifunctional thiourea catalyst promotes aldoladditions of alpha-isothiocyanato imides to alpha-ketoesters under mild reaction conditions to form beta-hydroxy-alpha-amino acid derivatives with high levels of enantioselectivity.