Cyclooxygenase is critical for maintaining physiological functions, whereas overexpression of COX-2 was closely implicated in various cancers. In this study, a series of novel aminophosphonate derivativescontaining pyrazole moiety were synthesized with their anti-cancer activity evaluated. In vitro assays of the target compounds showed that Z21 displayed excellent COX-2 inhibitory activity against COX-2 (IC50 = 0
Nicotinium Dichromate (=3-Carboxypyridinium Dichromate; NDC) as an Efficient Reagent for the Oxidative Deamination of Amines and Aminophosphonates
作者:Sara Sobhani、Sima Aryanejad、Mahdi Faal Maleki
DOI:10.1002/hlca.201100404
日期:2012.4
A new method for the efficient synthesis of aldehydes, ketones, and oxophosphonates from various types of amines (primary and secondary) and aminophosphonates via oxidative deamination by nicotinium dichromate (=3‐carboxypyridinium dichromate; NDC) is described.
TiCl<sub>2</sub>(OTf)-SiO<sub>2</sub>: A solid stable lewis acid catalyst for Michael addition of α-Aminophosphonates, Amines, Indoles and Pyrrole
作者:Habib Firouzabadi、Naser Iranpoor、Soghra Farahi
DOI:10.1080/10426507.2017.1417298
日期:2018.5.4
TiCl3(OTf) on silica gel surface and introduced as a non-hygroscopic Lewis acidcatalyst for C-N and C-C bond formation via Michaeladditionreaction. A variety of structurally diverse nitrogen nucleophiles including α-aminophosphonates, aliphatic and aromatic amines and imidazole were evaluated as Michael donors. Friedel–Crafts alkylation of indoles and pyrrole was also investigated through Michael addition
摘要 TiCl2(OTf)-SiO2 是通过将 TiCl3(OTf) 固定在硅胶表面上简单制备的,并作为非吸湿性路易斯酸催化剂引入,通过迈克尔加成反应形成 CN 和 CC 键。各种结构不同的氮亲核试剂,包括 α-氨基膦酸酯、脂肪族和芳香族胺以及咪唑被评估为迈克尔供体。在 TiCl2(OTf)-SiO2 作为催化剂存在下,通过迈克尔加成反应研究了吲哚和吡咯的 Friedel-Crafts 烷基化反应。反应在室温或 60 °C 下在无溶剂条件下进行,以高产率获得所需的迈克尔加合物。图形概要
Synthesis, antiproliferative and apoptosis-inducing effects of novel asiatic acid derivatives containing α-aminophosphonates
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