Fluorescent Probes from Aromatic Polycyclic Nitrile Oxides: Isoxazoles versus Dihydro‐1λ
<sup>3</sup>
,3,2λ
<sup>4</sup>
‐Oxazaborinines
作者:Mattia Moiola、Antonio Bova、Stefano Crespi、Misal G. Memeo、Mariella Mella、Herman S. Overkleeft、Bogdan I. Florea、Paolo Quadrelli
DOI:10.1002/open.201900137
日期:2019.6
elaborated and functionalized with a protected triple bond. The introduction of a bromine atom at the position C10 of the anthracene moiety allows for inserting a variety of aromatic and heterocyclic substituents through Suzuki coupling. A two‐way synthetic route can lead to simple isoxazole derivatives or, after N−O bond reductive cleavage and BF3 complexation, enamino ketone boron complexes. The
Synthesis of novel anthracene derivatives of isoxazolino-carbocyclic nucleoside analogues
作者:Yuri Moggio、Laura Legnani、Bruna Bovio、Misal Giuseppe Memeo、Paolo Quadrelli
DOI:10.1016/j.tet.2011.12.047
日期:2012.2
derivatives were initially tested for their inhibitory activity against a variety of viruses, including Hepatitis B and C, Human Papilloma virus as well as Influenza viruses of type A and B. Modest anti-viralactivities were observed in Hepatitis assays while the activities in the cases of Influenza viruses were almost negligible. Good anti-viralactivity was found for compound 11bC with no cellular toxicity
choice for the preparation of N,O-nucleoside analogues containing purine rings by means of the Vorbrüggen protocol. Stericallyencumbered nitrosocarbonyl derivatives of mesitylene or anthracene undergo ene reactions with 3-methylbut-2-en-1-ol to give the corresponding the 5-hydroxyisoxazolidine adducts in fair yields. According to the proposed mechanism, these heterocycles are derived from the anti-Markovnikov
aminols were used for the synthesis of β-turnmimics. The peptide chain choice ascertained the influence of their structural features on the applicability/reliability/robustness of these scaffolds as β-turn inducers and their limitations. The amino acid selection as well as steric demands can favor or disfavor the structure folding and the correct design of the peptide chains deeply influences the potential
环戊[ d ]异恶唑啉氨基用于合成β-转角模拟物。肽链的选择确定了其结构特征对这些支架作为β-转角诱导剂的适用性/可靠性/稳健性的影响及其局限性。氨基酸选择以及空间需求可能有利于或不利于结构折叠,肽链的正确设计深刻影响这些基于亚硝基羰基的化合物作为转角诱导剂的潜在用途。
Facile P–C bond cleavage in the reactions of nitrile oxides with zerovalent triphenylphosphine platinum complexes
作者:Wolfgang Beck、Michael Keubler、Erich Leidl、Ulrich Nagel、Mathias Schaal、Sergio Cenini、Paola Del Buttero、Emanuela Licandro、Stefano Maiorana、Angiola Chiesi Villa
DOI:10.1039/c39810000446
日期:——
Stable nitrileoxides react with Pt(PPh3)2L (L = PPh3,C2H4) to give 1 : 1 products; X-ray studies show that the nitrileoxide is deoxygenated by triphenyl-phosphine and that a phenyl group migrates to the platinum atom to give the complexes [Pt(Ph)(OPPh2)(RCN)(PPh3)].