制备了一系列咪唑并[1,5- a ]吡嗪的羟吲哚衍生物,并通过1 H NMR,质量和HRMS数据证实。评估了这些化合物对一组来自52种人类肿瘤细胞系的抗癌活性,这些细胞系来自9种不同的癌症类型:白血病,肺癌,结肠癌,中枢神经系统,黑色素瘤,卵巢癌,肾癌,前列腺癌和乳腺癌。其中化合物7l显示出显着的抗癌活性,GI 50值为1.54至13.0μM。用6.5μM(IC 50)浓度的化合物7l处理A549细胞后,在G0 / G1期观察到细胞周期停滞并诱导凋亡。膜联蛋白V-FITC以及DNA片段分析证实了这一点,有趣的是该化合物(7l)不影响正常细胞。
New half-sandwich (η6-p-cymene)ruthenium(II) complexes with benzothiazole hydrazone Schiff base ligand: Synthesis, structural characterization and catalysis in transamidation of carboxamide with primary amines
techniques (IR, NMR) and also by mass spectrometry. The solid state structure of the complex 3 reveals the coordination of p-cymene moieties with ruthenium(II) in a three-legged piano-stool geometry along with benzothiazole hydrazone Schiff base ligand in a monobasic bidentate fashion. The catalytic properties of the complexes were screened in transamidation of primary amide with amines after optimization
examples of catalysis using nickel complexes have been reported. In this work, the Ni-catalyzed transformation of ortho C-H bonds utilizing chelation assistance, such as oxidative cycloaddition of aromatic amides with alkynes, has been achieved.
An efficient method for N-acylation of amides is described using a pyridine ring as the internal nucleophilic catalyst to give imides in moderate to excellent yields. The methodology provides a facile, air insensitive, and environmentally friendly route to form diversified imide scaffolds, which exist widely in natural products and biologically active materials.
Cobalt-Catalyzed Carbonylative Synthesis of Phthalimides from <i>N</i>-(Pyridin-2-ylmethyl)benzamides with TFBen as the CO Source
作者:Lu-Yang Fu、Jun Ying、Xiao-Feng Wu
DOI:10.1021/acs.joc.9b01890
日期:2019.10.4
A cobalt-catalyzed direct carbonylative synthesis of phthalimide motifs from N-(pyridin-2-ylmethyl)benzamides has been developed. Various phthalimide derivatives were obtained in moderate to excellent yields (up to 98%) by using 2-picolylamine as an efficient directing group and benzene-1,3,5-triyl triformate (TFBen) as a convenient CO surrogate.