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.
Regio- and diastereoselective conjugate addition of Grignard reagents to aryl substituted α,β-unsaturated carbonyl compounds derived from Oppolzer's sultam
作者:Xiufang Cao、Fang Liu、Wenchang Lu、Gang Chen、Guang-Ao Yu、Sheng Hua Liu
DOI:10.1016/j.tet.2008.04.048
日期:2008.6
Asymmetric conjugate addition of Grignard reagents to aryl substituted α,β-unsaturatedcarbonylcompounds (1) has been achieved with great regioselectivity (>20:1) and good to excellent diastereoselectivity (de up to 98%). The nucleophilicity and stereospecific blockade of the Grignard reagents play a key role in controlling the regioselectivities and diastereoselectivities of the conjugate addition
Asymmetric syntheses and bio-evaluation of novel chiral esters derived from substituted tetrafluorobenzyl alcohol
作者:Shengzhen Xu、Huangyong Li、Xiaohui Wang、Changshui Chen、Minhui Cao、Xiufang Cao
DOI:10.1016/j.bmcl.2014.04.055
日期:2014.6
A series of novel chiral estersderivedfrom tetrafluorobenzyl alcohol were designed and prepared via asymmetric synthesis. The target molecules have been identified on the basis of analytical spectra data. All newly synthesized compounds have been screened their potential insecticidal activity against Plutella xylostella compared with those of fenvalerate and d-trans-phenothrin by standard method
通过不对称合成设计并制备了一系列衍生自四氟苄醇的新型手性酯。根据分析光谱数据确定了目标分子。已通过标准方法筛选了所有新合成的化合物对小菜蛾小菜蛾的潜在杀虫活性(与苯丙戊酸酯和d-反式-邻苯二酚相比),以及各对对映异构体(3 - B1 - R / S,3 - C1 - R / S,3 - D1 - R /S)表示明显不同的活动。