Polyalkoxybenzenes from Plants. 5. Parsley Seed Extract in Synthesis of Azapodophyllotoxins Featuring Strong Tubulin Destabilizing Activity in the Sea Urchin Embryo and Cell Culture Assays
作者:Marina N. Semenova、Alex S. Kiselyov、Dmitry V. Tsyganov、Leonid D. Konyushkin、Sergei I. Firgang、Roman V. Semenov、Oleg R. Malyshev、Mikhail M. Raihstat、Fabian Fuchs、Anne Stielow、Margareta Lantow、Alex A. Philchenkov、Michael P. Zavelevich、Nikolay S. Zefirov、Sergei A. Kuznetsov、Victor V. Semenov
DOI:10.1021/jm200737s
日期:2011.10.27
targeted molecules were evaluated in vivo in a phenotypic seaurchinembryo assay for antimitotic and tubulin destabilizing activity. The most active compounds identified by the in vivo seaurchinembryo assay featured myristicin-derived ring E (4e, 6e, and 8e). These molecules were determined to be more potent than podophyllotoxin. Cytotoxic effects of selected molecules were further confirmed and evaluated
tetronic acid (2) or 1,3-cyclopentanedione (3) produced anilinolactones 4a-d and anilinocyclopentenone 5a, respectively, which were then condensed with benzaldehydes to yield 4-aza-1-arylnaphthalene lignan analogs 6–19.
Supported molybdenum on graphene oxide/Fe3O4: An efficient, magnetically separable catalyst for one-pot construction of spiro-oxindole dihydropyridines in deep eutectic solvent under microwave irradiation
Magnetically separable grapheneoxide supported molybdenum (Fe3O4/GO-Mo) nanoparticles were prepared and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), and vibrating sample magnetometry (VSM) techniques. The synthesized heterogeneous material was found to exhibit high catalytic activity
磁性可分离的氧化石墨烯负载的钼(Fe 3 O 4/ GO-Mo)纳米粒子的制备和表征,包括X射线衍射(XRD),扫描电子显微镜(SEM),透射电子显微镜(TEM),傅里叶变换红外光谱(FT-IR)和振动样品磁强度(VSM)技术。发现合成异质材料在微波辐射下,用氯化胆碱(ChCl)/脲作为绿色溶剂,在靛红,丙二腈和苯胺内酯的一锅,三组分反应中显示出高催化活性。它提供了一种高效,高产率地合成螺并吲哚二氢吡啶的有效方法。催化系统可以成功地重复使用八次,而催化性能的下降很小。
Manganese ferrite nanoparticle catalyzed tandem and green synthesis of spirooxindoles
PEG-400 as a nontoxic, green and reusable solvent was used for the synthesis of novel spiro-furo-pyridine-indoline-carbonitriles in the presence of a magnetically recoverable nanocatalyst.
Enantioselective Construction of Cyclic Enaminone-Based 3-Substituted 3-Amino-2-oxindole Scaffolds<i>via</i>Catalytic Asymmetric Additions of Isatin-Derived Imines
作者:Lu-Jia Zhou、Yu-Chen Zhang、Fei Jiang、Guofeng He、Jingjing Yan、Han Lu、Shu Zhang、Feng Shi
DOI:10.1002/adsc.201600508
日期:2016.10.6
bioactivity has been developed via chiral phosphoric acid‐catalyzed enantioselective addition reactions of cyclic enaminones to isatin‐derived imines, which afforded a series of cyclic enaminone‐based 3‐substituted 3‐amino‐2‐oxindoles in high yields and excellent enantioselectivities (up to 99% yield, 97% ee). The investigation of the reaction mechanism suggested that it was facilitated by a dual hydrogen‐bonding