Organocatalyzed benzannulation for the construction of diverse anthraquinones and tetracenediones
作者:Krishna Bahadur Somai Magar、Likai Xia、Yong Rok Lee
DOI:10.1039/c5cc00623f
日期:——
An efficient one-pot synthesis of anthraquinones and tetracenediones was achieved by l-proline catalyzed benzannulation of commercially available 1,4-naphthoquinones or 1,4-anthracenedione with a variety of α,β-unsaturated aldehydes in good to excellent yield.
Regiocontrolled Diels–-Alder reactions of 9-chloro-10-hydroxyanthracene-1,4-dione
作者:Ramesh C. Gupta、David A. Jackson、Richards J. Stoodley
DOI:10.1039/c39820000929
日期:——
The title compound reacts with isoprene in the presence of aluminium chloride of boron trifluoride–ether to give the 2-methyl derivative of 6-chloro-11-hydroxy-14,4a, 12a-tetrahydronaphthacene-5,12-done;in the presence of boron triacetate, the 3-methyl isomer is the major product.
Abstract Synthesis of two naturally occurring anthraquinones, Barleriaquinone-I (BQ-I) and Barleriaquinone-II (BQ-II) is achieved from commercially available naphthalene-1,5-diol. The anthraquinone core is constructed by utilizing simultaneous Heck and cross coupling reaction as the key step. Graphical Abstract
Design, synthesis, biochemical studies, cellular characterization, and structure-based computational studies of small molecules targeting the urokinase receptor
作者:Fang Wang、W. Eric Knabe、Liwei Li、Inha Jo、Timmy Mani、Hartmut Roehm、Kyungsoo Oh、Jing Li、May Khanna、Samy O. Meroueh
DOI:10.1016/j.bmc.2012.06.002
日期:2012.8
The urokinasereceptor (uPAR) serves as a docking site to the serine protease urokinase-type plasminogen activator (uPA) to promote extracellular matrix (ECM) degradation and tumor invasion and metastasis. Previously, we had reported a smallmolecule inhibitor of the uPAR·uPA interaction that emerged from structure-based virtual screening. Here, we measure the affinity of a large number of derivatives
Highly strained dihydroanthraquinones: oxidation versus elimination
作者:John D Reynolds、Robert G Brinson、Cynthia S Day、Paul B Jones
DOI:10.1016/j.tetlet.2004.02.041
日期:2004.3
The chemistry of strained dihydroanthraquinones was investigated for the purpose of developing syntheses for highlystrained anthraquinones. The reaction of (1,4-dihydro-9,10-dioxo-anthracen-1-yl)-acetates with triethylamine under aerobic conditions was found to be dependent on the degree of substitution on the acetate. Dihydroanthraquinones bearing dimethylacetates underwent elimination of enolate