Bis(2-cycloazylindolyl)titanium Complexes: Synthesis, Characterization, and the Catalytic Behaviors towards Hydroamination and Ring-opening Polymerization of ϵ-Caprolactone
作者:Jing-Jing Zhao、Hao Pei、Yan-Mei Chen、Ning Lu、Jin-Na Liu、Jin-Fa Hu、Wei Liu、Wu Li、Yahong Li
DOI:10.1002/zaac.201500072
日期:2015.6
corresponding complexes Ti(L1)2(NMe2)2 (1) and Ti(L2)2(NMe2)2 (2), respectively. The titaniumcomplexes were fully characterized by NMR measurement and elemental analysis as well as the single-crystal X-ray diffraction of 1 and 2. Both 1 and 2 exhibit high activities towards intermolecular hydroamination of terminal alkynes with high selectivity, and they also efficiently promote the ring-opening polymerization
A highly efficient iodine-catalyzed regioselective oxidative cross-coupling of an indole C-H bond and azole N-H bond is described. This metal-free reaction can be easily carried out at room temperature under mild and environmentally friendly conditions and provides a series of N-linked 2-(azol-1-yl)indole derivatives in moderate to excellence yields.
Toward Highly Potent Cancer Agents by Modulating the C-2 Group of the Arylthioindole Class of Tubulin Polymerization Inhibitors
作者:Giuseppe La Regina、Ruoli Bai、Whilelmina Maria Rensen、Erica Di Cesare、Antonio Coluccia、Francesco Piscitelli、Valeria Famiglini、Alessia Reggio、Marianna Nalli、Sveva Pelliccia、Eleonora Da Pozzo、Barbara Costa、Ilaria Granata、Amalia Porta、Bruno Maresca、Alessandra Soriani、Maria Luisa Iannitto、Angela Santoni、Junjie Li、Marlein Miranda Cona、Feng Chen、Yicheng Ni、Andrea Brancale、Giulio Dondio、Stefania Vultaggio、Mario Varasi、Ciro Mercurio、Claudia Martini、Ernest Hamel、Patrizia Lavia、Ettore Novellino、Romano Silvestri
DOI:10.1021/jm3013097
日期:2013.1.10
New arylthioindole derivatives having different cyclic substituents at position 2 of the indole were synthesized as anticancer agents. Several compounds inhibited tubulin polymerization at submicromolar concentration and inhibited cell growth at low nanomolar concentrations. Compounds 18 and 57 were superior to the previously synthesized S. Compound 18 was exceptionally potent as an inhibitor of cell growth: it showed IC50 = 1.0 nM in MCF-7 cells, and it was uniformly active in the whole panel of cancer cells and superior to colchicine and combretastatin A-4. Compounds 18, 20, 55, and 57 were notably more potent than vinorelbine, vinblastine, and paclitaxel in the NCl/ADR-RES and Messa/Dx5 cell lines, which overexpress P-glycoprotein. Compounds 18 and 57 showed initial vascular disrupting effects in a tumor model of liver rhabdomyosarcomas at 15 mg/kg intravenous dosage. Derivative 18 showed water solubility and higher metabolic stability than 5 in human liver microsomes.
Highly Regioselective C–N Bond Formation through C–H Azolation of Indoles Promoted by Iodine in Aqueous Media
作者:Wen-Bin Wu、Jing-Mei Huang
DOI:10.1021/ol302609m
日期:2012.12.7
An efficient and metal-free method for the direct C-N coupling of indoles with azoles to produce 2-(azol-1-yl)indoles in aqueous solution has been developed. This reaction proceeded highly regioselectively to provide a variety of indole derivatives with good to excellent yields.