6317-35-7Relevant articles and documents
Ir-catalyzed chemoselective reduction of β-amido esters: A versatile approach to β-enamino esters
Yang, Zhi-Ping,Lu, Guang-Sheng,Ye, Jian-Liang,Huang, Pei-Qiang
, p. 1624 - 1631 (2019/01/04)
The conversion of β-amido esters to β-enamino esters is an indispensable step for some synthetic approaches to alkaloids and related medicines. Known methods for such transformation are not only stepwise, but also proceed with low atom-efficiency. Herein, we report a direct and versatile approach that features the Ir-catalyzed chemoselective reduction of β-amido esters with 1,1,3,3-tetramethyldisiloxane (TMDS). In addition, a lack of some signals was observed in the 13C NMR spectra of some alicyclic β-enamino esters. This revealed a longstanding existing but being ignored phenomenon in the literature.
N-Acylaminophenothiazines: Neuroprotective agents displaying multifunctional activities for a potential treatment of Alzheimer's disease
González-Mu?oz, Gema C.,Arce, Mariana P.,López, Beatriz,Pérez, Concepción,Romero, Alejandro,Barrio, Laura Del,Martín-De-Saavedra, María Dolores,Egea, Javier,León, Rafael,Villarroya, Mercedes,López, Manuela G.,García, Antonio G.,Conde, Santiago,Rodríguez-Franco, María Isabel
body text, p. 2224 - 2235 (2011/06/22)
We have previously reported the multifunctional profile of N-(3-chloro-10H-phenothiazin-10-yl)-3-(dimethylamino)propanamide (1) as an effective neuroprotectant and selective butyrylcholinesterase inhibitor. In this paper, we have developed a series of N-acylaminophenothiazines obtained from our compound library or newly synthesised. At micro- and sub-micromolar concentrations, these compounds selectively inhibited butyrylcholinesterase (BuChE), protected neurons against damage caused by both exogenous and mitochondrial free radicals, showed low toxicity, and could penetrate into the CNS. In addition, N-(3-chloro-10H-phenothiazin-10-yl)-2-(pyrrolidin-1-yl) acetamide (11) modulated the cytosolic calcium concentration and protected human neuroblastoma cells against several toxics, such as calcium overload induced by an l-type Ca2+-channel agonist, tau-hyperphosphorylation induced by okadaic acid and Aβ peptide.
Samarium(III) triflate catalyzed conjugate addition of amines to electron-deficient alkenes
Yadav,Ramesh Reddy,Gopal Rao,Narsaiah,Subba Reddy
, p. 3447 - 3450 (2008/09/19)
Amines undergo smooth nucleophilic addition to α,β-unsaturated compounds in the presence of a catalytic amount of samarium(III) triflate at ambient temperature to produce the corresponding β-amino compounds in excellent yields. This method is simple, convenient, and works efficiently under mild conditions. Georg Thieme Verlag Stuttgart.