Chiral γ-Aryl-1<i>H</i>-1,2,4-triazole Derivatives as Highly Potential Antifungal Agents: Design, Synthesis, Structure, and in Vitro Fungicidal Activities
作者:Xiufang Cao、Fei Li、Ming Hu、Wenchang Lu、Guang-Ao Yu、Sheng Hua Liu
DOI:10.1021/jf8026843
日期:2008.12.10
gamma-aryl-1H-1,2,4-triazole derivatives as highly potential antifungal agents have been designed and synthesized conveniently by using the chiral auxiliary as a controlling reagent. All of the compounds exhibit moderate to high ee values reaching up to 99%, and the preliminary bioassay results demonstrated that most of the target compounds take on a significantly wide spectrum activity against Fusarium oxysporium
作者:Xiu-Fang Cao、Ming Hu、Fei Li、Wen-Chang Lu、Guang-Ao Yu、Sheng-Hua Liu
DOI:10.1002/hlca.200800375
日期:2009.5
Abstractmagnified imageA highly enantioselective approach towards the synthesis of β‐substituted chiral ketones by utilizing Grignard reagents was achieved. The (R)‐ and (S)‐antipodes of the target chiral ketones 2a–2k were obtained with up to 100% ee from chiral N‐alkanoylcamphorsultams 1 (Scheme, Table 2). This simple, catalyst‐free, direct procedure for the formation of chiral ketones is a fascinating method for the practical syntheses of chiral synthons as valuable building blocks and important medicinal intermediates.