A Novel Synthesis of Diethyl 1-Aminoarylmethylphosphonates on the Surface of Alumina
摘要:
A novel route has been devised for the preparation of a series of diethyl 1-aminoarylmethylphosphonates. The route involves facile reaction among aromatic aldehydes, diethyl hydrogen phosphite and HMDS on the surface of alumina. (C) 1997 Published by Elsevier Science Ltd.
Surface-Mediated Solid Phase Reactions: A Simple and New Method for the Synthesis of<i>α</i>-Aminophosphonates under Solvent-Free Conditions
作者:Babak Kaboudin
DOI:10.1246/cl.2001.880
日期:2001.9
Alumina-supported ammonium formate was found to be an efficient reagent for the synthesis of 1-aminophosphonates from aldehydes and diethyl phosphite. This method is an easy, rapid and high-yieldin...
Synthesis and antitumor activities of novel rhein α-aminophosphonates conjugates
作者:Gui-yang Yao、Man-yi Ye、Ri-zhen Huang、Ya-jun Li、Ying-ming Pan、Qing Xu、Zhi-Xin Liao、Heng-shan Wang
DOI:10.1016/j.bmcl.2013.12.030
日期:2014.1
Several rhein alpha-aminophosphonates conjugates (5a-5q) were synthesized and evaluated for in vitro cytotoxicity against HepG-2, CNE, Spca-2, Hela and Hct-116 cell lines. Some compounds showed relatively high cytotoxicity. Especially, compound 5i exhibited the strongest cytotoxicity against Hct-116 cells (IC50 was 5.32 mu M). All the synthesized compounds exhibited low cytotoxicity against HUVEC cells. The mechanism of compound 5i was preliminarily investigated by Hoechst 33258 staining, JC-1 mitochondrial membrane potential staining and flow cytometry, which indicated that the compound 5i induced apoptosis in Hct-116 cancer cells. Cell cycle analysis showed that these compound 5i mainly arrested Hct-116 cells in G1 stage. The effects of 5i on the activation of caspases expression indicated that 5i might induce apoptosis via the membrane death receptor pathways. In addition, the binding properties of a model analog 5i to DNA were investigated by methods (UV-vis, fluorescence, CD spectroscopy and FRET-melting) in compare with that of rhein. Results indicated that 5i showed moderate ability to interact ct-DNA. (C) 2013 Elsevier Ltd. All rights reserved.
Synthesis and antitumor activities of novel α-aminophosphonates dehydroabietic acid derivatives
A series of novel alpha-aminophosphonate derivatives containing DHA structure were designed and synthesized as antitumor agents. In vitro antitumor activities of these compounds against the NCI-H460 (human lung cancer cell), A549 (human lung adenocarcinoma cell), HepG2 (human liver cancer cell) and SKOV3 (human ovarian cancer cell) human cancer cell lines were evaluated and compared with commercial anticancer drug 5-fluorouracil (5-FU), employing standard MTT assay. The pharmacological screening results revealed that many compounds exhibited moderate to high levels of antitumor activities against the tested cancer cell lines and that most demonstrated more potent inhibitory activities compared with the commercial anticancer drug 5-FU. The action mechanism of representative compound 7c was preliminarily investigated by acridine orange/ethidium bromide staining, Hoechst 33258 staining, JC-1 mitochondrial membrane potential staining and flow cytometry, which indicated that the compound can induce cell apoptosis in NCI-H460 cells. Cell cycle analysis showed that compound 7c mainly arrested NCI-H460 cells in G1 stage. (C) 2013 Elsevier Ltd. All rights reserved.