57728-63-9Relevant academic research and scientific papers
Insights into the antiproliferative mechanism of (C^N)-chelated half-sandwich iridium complexes
Ramos, Robin,Zimbron, Jérémy M.,Thorimbert, Serge,Chamoreau, Lise-Marie,Munier, Annie,Botuha, Candice,Karaiskou, Anthi,Salmain, Michèle,Sobczak-Thépot, Jo?lle
supporting information, p. 17635 - 17641 (2020/12/30)
Transition metal-based anticancer compounds, as an alternative to platinum derivatives, are raising scientific interest as they may present distinct although poorly understood mechanisms of action. We used a structure-activity relationship-based methodology to investigate the chemical and biological features of a series of ten (C^N)-chelated half-sandwich iridiumIII complexes of the general formula [IrCp?(phox)Cl], where (phox) is a 2-phenyloxazoline ligand forming a 5-membered metallacycle. This series of compounds undergoes a fast exchange of their chlorido ligand once solubilised in DMSO. They were cytotoxic to HeLa cells with IC50 values in the micromolar range and induced a rapid activation of caspase-3, an apoptosis marker. In vitro, the oxidative power of all the complexes towards NADH was highlighted but only the complexes bearing substituents on the oxazoline ring were able to produce H2O2 at the micromolar range. However, we demonstrated using a powerful HyPer protein redox sensor-based flow cytometry assay that most complexes rapidly raised intracellular levels of H2O2. Hence, this study shows that oxidative stress can partly explain the cytotoxicity of these complexes on the HeLa cell line and gives a first entry to their mechanism of action. This journal is
A Mild and Regioselective Route to Functionalized Quinazolines
Maiden, Tracy M. M.,Swanson, Stephen,Procopiou, Panayiotis A.,Harrity, Joseph P. A.
supporting information, p. 14342 - 14346 (2015/10/05)
A Rh-catalyzed ortho-amidation cyclocondensation sequence gave a range of 4-aminoquinazolines in high yield. The method features a remarkably mild C(sp2)-H activation step and can be exploited to rapidly access compounds with established biological activity.
Polymer-mounted N3=P(MeNCH2CH2) 3N: A green, efficient and recyclable catalyst for room-temperature transesterifications and amidations of unactivated esters
Chintareddy, Venkat Reddy,Ho, Hung-An,Sadow, Aaron D.,Verkade, John G.
experimental part, p. 6523 - 6529 (2011/12/21)
Merrifield resin-supported N3P(MeNCH2CH 2)3N shows excellent activity in the transesterification of higher esters such as glyceryl tribenzoate to methyl esters. The catalyst was successfully cycled 20 times (albeit with an increase in reaction time) without compromising yield up to the 20th cycle. The catalyst also showed good performance in amidation reactions of unactivated esters with amino alcohols.
N-heterocyclic carbene-catalyzed amidation of unactivated esters with amino alcohols
Movassaghi, Mohammad,Schmidt, Michael A.
, p. 2453 - 2456 (2007/10/03)
(Chemical Equation Presented) A catalytic amidation of unactivated esters with amino alcohols is described. A series of solution studies in addition to the first X-ray structure of a carbene-alcohol complex support a carbene-base nucleophile activation mechanism.
A novel electrochemical method for benzoylation of aminoalcohols with methyl benzoates at room temperature
Arai, Kenji,Tamura, Shohei,Masumizu, Tatsuya,Kawai, Ken-Ichi,Nakajima, Shoichi,Ueda, Akira
, p. 903 - 907 (2007/10/02)
A novel electrochemical method of benzoylating aminoalcohols 2 by use of methyl benzoates 1 at room temperature was developed. 2-Aminoethanols 2 (n=0, R3=H) and 3-aminopropanols 2 (n=1, R3=H) gave the corresponding benzamides 4, as a result of electrochemical transesterification followed by O,N-acyl migration.In contrast, o- and m-aminobenzylalcohols (7a and 7b) and trans-4-(aminomethyl)cyclohexanemethanol (8a) afforded the corresponding benzoic esters, since their acyl migration is hindered.A local anesthetic, procaine, was prepared by using this electrochemical reaction.A mechanism for electrochemical transesterification, which involves a formation of alcoholate anion by a one-electron reduction of alcohol, is presented.
ELECTROCHEMICAL AMIDATION OF ESTERS
Arai, Kenji,Shaw, Chu-hei,Nozawa, Koohei,Kawai, Ken-ichi,Nakajima, Shoichi
, p. 441 - 442 (2007/10/02)
Amidation reactions between ester and amine, both aliphatic and aromatic, which do not happen non-electrochemically at room temperature, took place merely by passing electric current in cathodic compartment.
