898547-79-0Relevant academic research and scientific papers
4-Aryl Pyrrolidines as a Novel Class of Orally Efficacious Antimalarial Agents. Part 1: Evaluation of 4-Aryl- N-benzylpyrrolidine-3-carboxamides
Meyers, Marvin J.,Liu, Jianguang,Xu, Jing,Leng, Fang,Guan, Jiantong,Liu, Zhijun,McNitt, Sarah A.,Qin, Limei,Dai, Linglin,Ma, Hongwei,Adah, Dickson,Zhao, Siting,Li, Xiaofen,Polino, Alex J.,Nasamu, Armiyaw S.,Goldberg, Daniel E.,Liu, Xiaorong,Lu, Yongzhi,Tu, Zhengchao,Chen, Xiaoping,Tortorella, Micky D.
supporting information, p. 3503 - 3512 (2019/03/29)
Identification of novel chemotypes with antimalarial efficacy is imperative to combat the rise of Plasmodium species resistant to current antimalarial drugs. We have used a hybrid target-phenotype approach to identify and evaluate novel chemotypes for malaria. In our search for drug-like aspartic protease inhibitors in publicly available phenotypic antimalarial databases, we identified GNF-Pf-4691, a 4-aryl-N-benzylpyrrolidine-3-carboxamide, as having a structure reminiscent of known inhibitors of aspartic proteases. Extensive profiling of the two terminal aryl rings revealed a structure-activity relationship in which relatively few substituents are tolerated at the benzylic position, but the 3-aryl position tolerates a range of hydrophobic groups and some heterocycles. Out of this effort, we identified (+)-54b (CWHM-1008) as a lead compound. 54b has EC50 values of 46 and 21 nM against drug-sensitive Plasmodium falciparum 3D7 and drug-resistant Dd2 strains, respectively. Furthermore, 54b has a long half-life in mice (4.4 h) and is orally efficacious in a mouse model of malaria (qd; ED99 ～ 30 mg/kg/day). Thus, the 4-aryl-N-benzylpyrrolidine-3-carboxamide chemotype is a promising novel chemotype for malaria drug discovery.
1,3-Dipolar cycloaddition of unstabilised azomethine ylides by Lewis base catalysis
Pandiancherri, Shveta,Ryan, Sarah J.,Lupton, David W.
, p. 7903 - 7911 (2013/07/05)
Lewis base catalysed 1,3-dipolar cycloaddition between α,β- unsaturated acyl fluorides and N-[(trimethylsilyl)methyl]amino ethers has been achieved using 1 mol% DMAP. Competition experiments and 19F-NMR studies indicate that the cycloaddition o
Design and syntheses of melanocortin subtype-4 receptor agonists. Part 2: Discovery of the dihydropyridazinone motif
Ujjainwalla, Feroze,Warner, Daniel,Snedden, Christine,Grisson, Ricky D.,Walsh, Thomas F.,Wyvratt, Matthew J.,Kalyani, Rubana N.,MacNeil, Tanya,Tang, Rui,Weinberg, David H.,Van Der Ploeg, Lex,Goulet, Mark T.
, p. 4023 - 4028 (2007/10/03)
Optimization of the biological activity of a new class of non-peptidyl, pyridazinone derived human melanocortin subtype-4 receptor agonists is disclosed.
