Enantioselective Construction of Amino Carboxylic‐Phosphonic Acid Derivatives Enabled by Chiral Amino Thiourea‐Catalyzed Decarboxylative Mannich Reaction
作者:Xue‐Qi Wang、Fang‐Fang Feng、Jing Nie、Fa‐Guang Zhang、Jun‐An Ma
DOI:10.1002/adsc.202200306
日期:2022.6.7
An asymmetric decarboxylativeMannichreaction of phosphonate sultam-ketimines with malonic acid half esters is developed enabled by saccharide-derived bifunctional amino thiourea catalysis. This protocol provides access to a broad range of α-amino-β-carboxylic phosphonates featuring the N,P-containing tetrasubstituted stereocenters with 78–99% ee. Further synthetic derivatizations could allow the
通过糖衍生的双功能氨基硫脲催化,开发了膦酸磺胺酮亚胺与丙二酸半酯的不对称脱羧曼尼希反应。该协议提供了广泛的 α-氨基-β-羧酸膦酸盐,具有 78–99% ee 的含N、P的四取代立体中心。进一步的合成衍生化可以允许将酰胺、醇和氮杂环丁烷支架引入核心结构。
Synthesis of trans-caffeate analogues and their bioactivities against HIV-1 integrase and cancer cell lines
作者:Chun-nian Xia、Hai-bo Li、Feng liu、Wei-xiao Hu
DOI:10.1016/j.bmcl.2008.10.046
日期:2008.12
Forty caffeate analogues were synthesized via a convenient method starting from vanillin with moderate to good yields. The testing of biological activity of these compounds against HIV-1 integrase indicates that four compounds: bornyl caffeate, bornyl 2-nitrocaffeate, 5-nitrocaffeic acid and 5-nitrocaffeic acid phenethyl ester (5-nitroCAPE) possess a good HIV integrase inhibitory activity, IC50 19.9, 26.8, 25.0 and 13.5 mu M, respectively. Twelve caffeate analogues were tested by MTT assay on growth of human hepatocellular carcinoma BEL-7404, human breast MCF-7 adenocarcinoma, human lung A549 adenocarcinoma and human gastric cancer BCG823 cell lines, respectively. And the best result is IC50 5.5 mu M for CAPE against BEL-7404. (C) 2008 Elsevier Ltd. All rights reserved.
Hu, Wei-Xiao; Xia, Chun-Nian; Wang, Guo-Hong, Journal of Chemical Research, 2006, # 9, p. 586 - 588
We developed two efficient protocols for the synthesis of feruloyl and caffeoyl derivatives from commercial vanillin and veratraldehyde. Pharmacological activities were assessed against a panel of human cancer cell lines in vitro. Most synthesized compounds demonstrated attractive cytotoxicity. Several new compounds demonstrated significant antiproliferative and cytotoxic activities against HeLa and Bewo tumor cell lines. In particular, 5-nitro caffeic adamantyl ester showed broad spectrum of tumor inhibition in 10 cell lines, and reduced tumor weight by 36.7% in vivo when administered at a dose of 40 mg kg(-1). (C) 2014 Elsevier Ltd. All rights reserved.
Eine einfache Synthese von Malonsäure-mono- und -bis-phenylestern<sup>1</sup>