Murai Reaction on Furfural Derivatives Enabled by Removable<i>N</i>,<i>N</i>′-Bidentate Directing Groups
作者:Cristofer Pezzetta、Luis F. Veiros、Julie Oble、Giovanni Poli
DOI:10.1002/chem.201701850
日期:2017.6.22
Furfural and related compounds are industrially relevant building blocks obtained from lignocellulosic biomass. To enhance the added value of these renewable resources, a Ru‐catalyzed hydrofurylation of alkenes, involving a directed C−H activation at C3 of the furan ring, was developed. A thorough experimental study revealed that a bidentate amino‐imine directing group enabled the desired coupling
The synthesis of three novel m-aminophosphonic acid diesters N,N-dimethyl-[N'-methy](diethoxyphosphonyl)-(2-furyl)1-1,3-diaminopropane, p-IN-methyl(diethoxyphosphonyl)-(2-furyl)]toluidine and p-[N-methyl(diethoxyphosphonyl)-(4-dimethylaminophenyl)]toluidine through an addition of diethyl phosphite to N,N-dimethyl-N'-furfurylidene-1,3-diaminopropane, N-furfurylidene-p-toluidine and N-(4-dimethylaminobenzylidene)-p-toluidine, respectively, is reported. The alpha-aminophosphonates have been characterized by elemental analysis, IR and NMR (H-1, C-13 and P-31) spectra. The compounds were tested for anti proliferative effects against 4 human leukemic cell lines, namely LAMA-84, K-562 (chronic myeloid leukemias), HL-60 (acute promyelocyte leukemia) and HL-60/Dox (multi-drug-resistant sub-line, characterized by overexpression of MRP-1 (ABC-C1)) and were found to exert concentration-dependent cytotoxic effects. A representative aminophosphonate compound was shown to induce oligonucleosomal DNA fragmentation which implies that the induction of cell death through apoptosis plays an important role for its cytotoxicity mode of action. (C) 2009 Elsevier Masson SAS. All rights reserved.