A Simple and General Chiral Silicon Lewis Acid for Asymmetric Synthesis: Highly Enantioselective [3 + 2] Acylhydrazone−Enol Ether Cycloadditions
作者:Seiji Shirakawa、Pamela J. Lombardi、James L. Leighton
DOI:10.1021/ja052307+
日期:2005.7.1
A highly diastereo- and enantioselective [3 + 2] acylhydrazone-enolethercycloaddition mediated by a simplechiralsilaneLewis acid is described. The reactions are highly practical, as demonstrated by a larger scale (5 g of the hydrazone) reaction in which the product was obtained after recrystallization in 93% yield and 99% ee. Evidence for a stepwise mechanism and a model for the asymmetric induction
描述了由简单的手性硅烷路易斯酸介导的高度非对映选择性和对映选择性 [3 + 2] 酰基腙烯醇醚环加成。这些反应是非常实用的,正如更大规模(5 g 腙)反应所证明的那样,其中重结晶后以 93% 的产率和 99% 的 ee 获得产物。还提供了逐步机制的证据和非对称归纳模型。
D-3-phosphoglycerate dehydrogenase allosteric inhibitor and use thereof
申请人:Peking University
公开号:US10722489B2
公开(公告)日:2020-07-28
This application discloses a D-3-phosphoglycerate dehydrogenase allosteric inhibitor and the use thereof. In one class is the benzoyl hydrazine compound for the allosteric site MDL-1 of the enzyme, and the other class is the furan compound for the allosteric site MDL-2 of the enzyme. In vitro enzymatic activity tests, cell viability tests and mouse xenograft model experiments confirm that the two classes of allosteric inhibitors can specifically inhibit the activity of D-3-phosphoglycerate dehydrogenase and delay the growth of cancer cells by reducing the overexpression of the enzyme in cancer cells. Same are used alone or in combination, or in combination with other anti-cancer drugs and can treat, prevent, or inhibit tumor diseases, including breast cancer, colon cancer, melanoma and non-small cell lung cancer.
[EN] D-3-PHOSPHOGLYCERATE DEHYDROGENASE ALLOSTERIC INHIBITOR AND USE THEREOF<br/>[FR] INHIBITEUR ALLOSTÉRIQUE DE LA D-3-PHOSPHOGLYCÉRATE DÉSHYDROGÉNASE ET SON UTILISATION<br/>[ZH] D-3-磷酸甘油酸脱氢酶别构抑制剂及其应用
D-3-PHOSPHOGLYCERATE DEHYDROGENASE ALLOSTERIC INHIBITOR AND USE THEREOF
申请人:Peking University
公开号:US20190262303A1
公开(公告)日:2019-08-29
This application discloses a D-3-phosphoglycerate dehydrogenase allosteric inhibitor and the use thereof. In one class is the benzoyl hydrazine compound for the allosteric site MDL-1 of the enzyme, and the other class is the furan compound for the allosteric site MDL-2 of the enzyme. In vitro enzymatic activity tests, cell viability tests and mouse xenograft model experiments confirm that the two classes of allosteric inhibitors can specifically inhibit the activity of D-3-phosphoglycerate dehydrogenase and delay the growth of cancer cells by reducing the overexpression of the enzyme in cancer cells. Same are used alone or in combination, or in combination with other anti-cancer drugs and can treat, prevent, or inhibit tumor diseases, including breast cancer, colon cancer, melanoma and non-small cell lung cancer.
Autotandem Catalyst: From Acylhydrazones to <i>N</i>′,<i>N</i>′-Methylaliphatic Acylhydrazides via Transfer Hydrogenation/<i>N</i>-Methylation with Methanol Catalyzed by a Cp* Iridium Complex Bearing a Functional Ligand
作者:Shiyuan Luo、Xiangchao Xu、Peng Zhang、Qixun Shi、Xiaoguang Yang、Feng Li
DOI:10.1021/acs.orglett.2c03719
日期:2022.12.16
A new strategy for the synthesis of N′,N′-methylaliphatic acylhydrazides from acylhydrazones via transfer hydrogenation/N-methylation with methanol as both the hydrogen source and the methylating reagent has been proposed and accomplished. In the presence of [Cp*Ir(2,2′-bpyO)(H2O)] (1 mol %) and Cs2CO3 (0.3 equiv), a range of desired products were obtained in high yields. It was also confirmed that