描述了一种不对称合成2 H -azirine-2-膦酸酯6的简单有效的方法。关键步骤是衍生自膦酸酯的对甲苯磺酰氧肟4的碱介导的Neber反应。使用三乙胺5,生物碱7和固相键合的非手性8或手性胺9。在乙醇中用硼氢化钠还原2 H -azirines 6得到顺式-氮丙啶膦酸酯10。氮丙啶10和11的开环导致对映体富集的β-12和14以及α-氨基膦酸酯13和15。
描述了一种不对称合成2 H -azirine-2-膦酸酯6的简单有效的方法。关键步骤是衍生自膦酸酯的对甲苯磺酰氧肟4的碱介导的Neber反应。使用三乙胺5,生物碱7和固相键合的非手性8或手性胺9。在乙醇中用硼氢化钠还原2 H -azirines 6得到顺式-氮丙啶膦酸酯10。氮丙啶10和11的开环导致对映体富集的β-12和14以及α-氨基膦酸酯13和15。
Synthesis of α-Aminophosphonic Acid Derivatives Through the Addition of O- and S-Nucleophiles to 2H-Azirines and Their Antiproliferative Effect on A549 Human Lung Adenocarcinoma Cells
作者:Victor Carramiñana、Ana M. Ochoa de Retana、Francisco Palacios、Jesús M. de los Santos
DOI:10.3390/molecules25153332
日期:——
phosphonate acetals after N–C3 ringopening of the intermediate aziridine. However, addition of 2,2,2-trifluoroethanol, phenols, substituted benzenthiols or ethanethiol to 2H-azirine phosphine oxides or phosphonates yields allylic α-aminophosphine oxides and phosphonates in good to high general yields. In some cases, the intermediate aziridine attained by the nucleophilic addition of O- or S-nucleophiles
Reaction of 2<i>H</i>-Azirine Phosphine Oxide and -Phosphonates with Nucleophiles. Stereoselective Synthesis of Functionalized Aziridines and α- and β-Aminophosphorus Derivatives
作者:Francisco Palacios、Ana M. Ochoa de Retana、José M. Alonso
DOI:10.1021/jo051404i
日期:2005.10.1
3, and -phosphine oxide 5 by diastereoselective addition of Grignard reagents to 2H-azirine phosphonate 1 and -phosphine oxide 4 is reported. Similarly, the addition of heterocyclic amines and benzenethiol to aziridines 1 and 4 yielded functionalized aziridines 10, 11, and 18. These aziridines are used as intermediates for the regioselective synthesis of β-aminophosphine oxides 6 and β-aminophosphonates
Reaction of 2<i>H</i>-Azirine-Phosphine Oxides and -Phosphonates with Enolates Derived from β-Keto Esters
作者:Ander Vélez del Burgo、Ana M. Ochoa de Retana、Jesús M. de los Santos、Francisco Palacios
DOI:10.1021/acs.joc.5b02347
日期:2016.1.4
Cyclopenta[b]-pyrrole-2-phosphine oxides 4a and -phosphonates 4b,c are generated by the addition of cyclic enolatesderivedfrom ethyl 2-oxo-cyclopentanecarboxylate 2 to phosphorated 2H-azirines 1. However, the addition of enolatederivedfrom acyclic 2-oxo-butanoate 10 to 2H-azirine phosphine oxide 1 led to vinylogous N-acyl-α-aminoalkyl phosphine oxides 12, involving the carbonyl group and the Cα
环戊二烯并[ b ]吡咯-2-膦氧化物4A和-phosphonates 4B,Ç通过加入选自乙基-2-氧代环戊烷羧酸衍生的烯醇化物的循环而产生2至磷化2 ħ -azirines 1。然而,将衍生自无环2-氧代丁酸酯10的烯醇盐添加至2 H-叠氮基氧化膦1导致乙烯基的N-酰基-α-氨基烷基氧化膦12,其涉及酮酸酯10的羰基和Cα 。乙烯基衍生物12的闭环在碱的存在下提供吡咯-2-氧化膦11。将茚满酮羧酸盐15衍生的烯醇盐添加到2 H- azirines 1中,导致形成官能化的N-取代的1 H-苯并[ d ]氮杂衍生物17。
Synthesis of optically active oxazoles from phosphorylated 2H-azirines and N-protected amino acids or peptides
作者:Francisco Palacios、Ana Marı́a Ochoa de Retana、José Ignacio Gil、José Marı́a Alonso
DOI:10.1016/s0957-4166(02)00686-9
日期:2002.11
triphenylphosphine and hexachloroethane in the presence of triethylamine leads to the formation of racemic and opticallyactive phosphorylated oxazoles containing N-protected amino acid residues 8 and 10. Deprotection of these oxazoles gives aminoalkyl oxazoles 11 and 12. 2H-Azirines 1 and 6 also react with N-protected peptides 13 and give functionalized ketamides 14 and 15, ring closure of which leads to the formation
First synthesis of merged hybrids phosphorylated azirino[2,1-b]benzo[e][1,3]oxazine derivatives as anticancer agents
作者:Victor Carramiñana、Ana M. Ochoa de Retana、Jesús M. de los Santos、Francisco Palacios
DOI:10.1016/j.ejmech.2019.111771
日期:2020.1
to azirino[2,1-b]benzo[e][1,3]oxazines containing phosphorus substituents such as phosphonate or phosphine oxide, by means of nucleophilic addition of functionalized phenols to the C-N double bond of 2H-azirine derivatives. In addition, the cytotoxic effect on cell lines derived from human lung adenocarcinoma (A549) and human embryonic kidney (HEK293) was also screened. Some azirino[2,1-b]benzo[e][1