35345-09-6Relevant academic research and scientific papers
Discovery of Imidazole-Based Inhibitors of Plasmodium falciparum cGMP-Dependent Protein Kinase
Aylor, Samantha O.,Bhanot, Purnima,Bheemanaboina, Rammohan R. Yadav,Childers, Wayne E.,Colussi, Dennis J.,De Souza, Mariana Laureano,Eck, Tyler,Gonzalez, Mariana Lozano,Gordon, John,Kreiss, Tamara,Lee, Patricia,Mahmood, Shams Ul,Pybus, Brandon S.,Rotella, David P.,Roth, Alison,Siekierka, John J.
supporting information, p. 1962 - 1967 (2021/12/01)
The discovery of new targets for the treatment of malaria, in particular those aimed at the pre-erythrocytic stage in the life cycle, advanced with the demonstration that orally administered inhibitors of Plasmodium falciparum cGMP-dependent protein kinase (PfPKG) could clear infection in a murine model. This enthusiasm was tempered by unsatisfactory safety and/or pharmacokinetic issues found with these chemotypes. To address the urgent need for new scaffolds, this paper presents initial structure-activity relationships in an imidazole scaffold at four positions, representative in vitro ADME, hERG characterization, and cell-based antiparasitic activity. This series of PfPKG inhibitors has good in vitro PfPKG potency, low hERG activity, and cell-based antiparasitic activity against multiple Plasmodium species that appears to be correlated with the in vitro potency.
Atom-economical synthesis of N-heterocycles via cascade inter-/intramolecular C-N Bond-forming reactions catalyzed by Ti amides
Shen, Hao,Xie, Zuowei
supporting information; experimental part, p. 11473 - 11480 (2010/10/02)
Direct and efficient catalytic reactions with excellent regioselectivity for the preparation of a series of substituted isoindoles, isoquinolines, and imidazoles are reported. Reaction of C6H4(2-CN)C≡C-R with an array of amines, catalyzed by 10 mol % of [σ:η1: η5-(OCH2)(Me2NCH2)C 2B9H9]Ti(NMe2) (1), gives a series of substituted isoindoles in very high yields. In a similar manner, interaction of C6H4(2-CH2CN)C≡C-Ph with various kinds of amines affords a wide range of substituted isoquinolines. On the other hand, treatment of propargylamines (R′C≡CCH2NHR′′) with nitriles in the presence of 10 mol % of 1 produces a class of substituted imidazoles in high yields. A possible reaction mechanism is proposed, involving sequential inter- and intramolecular C-N bond formation via hydroamination/ cyclization reaction of cyanoalkynes with amines or nitriles with propargylamines catalyzed by titanium amides.
