Base-Promoted Reactions of Hydroxyquinones with Pyrones: A Direct and Sustainable Entry to Anthraquinones and Naphthoquinones
作者:Huangchao Yu、George A. Kraus
DOI:10.1055/s-0039-1690106
日期:2019.9
Hydroxybenzoquinones and hydroxynaphthoquinones react with methyl coumalate and 5-cyanopyrone to generate anthraquinones and naphthoquinones in good to excellent yields.
羟基苯醌和羟基萘醌与香豆酸甲酯和 5-氰基吡喃酮反应生成蒽醌和萘醌,收率良好至极好。
De Novo Design, Synthesis, and Evaluation of Novel Nonsteroidal Phenanthrene Ligands for the Estrogen Receptor
作者:Jonathan M. Schmidt、Julie Mercure、Gilles B. Tremblay、Martine Pagé、Aida Kalbakji、Miklos Feher、Robert Dunn-Dufault、Markus G. Peter、Peter R. Redden
DOI:10.1021/jm020536q
日期:2003.4.1
improved tissue selectivity profiles compared with tamoxifen, optimal tissue selectivity has not yet been demonstrated. As such there is still a need for additional diversity and new chemicalscaffolds to allow for exploration of improved tissue selectivity. Here, we describe the discovery of a novel phenanthrene scaffold for estrogen receptor ligands utilizing a ligand based denovodesign approach. The
Asymmetric pyrone Diels–Alder reactions enabled by dienamine catalysis
作者:Charles J. F. Cole、Lilia Fuentes、Scott A. Snyder
DOI:10.1039/c9sc05738b
日期:——
utilizing pyrone dienes to create molecular complexity via Diels–Alder reactions with varied dienophiles, few examples of effective catalytic, asymmetric variants of this process have been developed. Herein, we show that the use of Jørgensen–Hayashi-type catalysts can convert an array of α,β-unsaturated aldehydes into chiral dienamines that can formally add in a Diels–Alder fashion to a number of electron-deficient
Novel non-steroidal estrogen receptor ligands and methods of synthesis are disclosed. The novel molecules are intended for use in therapeutic preparations for the treatment of estrogen receptor related disease states. The compounds specified are tetra-cyclic derivatives and have been shown to be antiproliferative against human estrogen-dependent cancer cells and to have good binding affinity for the estrogen receptor.
On the use of 2-(trimethylsilyl)iodobenzene as a benzyne precursor
作者:James A. Crossley、James D. Kirkham、Duncan L. Browne、Joseph P.A. Harrity
DOI:10.1016/j.tetlet.2010.10.052
日期:2010.12
A mild method for the generation of benzynes from 2-(trimethylsilyl)iodobenzene derivatives is reported. The employment of silver fluoride in conjunction with caesium fluoride is key for promoting useful levels of elimination and providing benzyne derived products in good yields. Moreover, the substrates are accessed by a novel alkynyl iodide cycloaddition.