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All total 15 Articles be found
Synthesis of 2-Alkylamino-3-fluoropyridines Using Buchwald Conditions
Munson, Peter M.,Thompson, Wayne J.
, p. 759 - 766 (2004)
Synthesis of 2-alkylamino-3-fluoropyridines from 2-chloro-3-fluoropyridine using palladium-catalyzed coupling reaction under Buchwald conditions is described.
Thorpe–Ingold Effect in Branch-Selective Alkylation of Unactivated Aryl Fluorides
O'Neill, Matthew J.,Riesebeck, Tim,Cornella, Josep
supporting information, p. 9103 - 9107 (2018/07/24)
Presented herein is a general protocol for the alkylation of simple aryl fluorides with unbiased secondary Grignard reagents by means of nickel catalysis. This study revealed a general Thorpe–Ingold effect in the ligand backbone which confers a high degree of selectivity for the secondary carbon center in the C?C coupling event. This protocol is characterized by mild reaction conditions, robustness, and simplicity. Both electron-rich and electron-deficient aryl fluorides are suitable candidates in this transformation. Equally amenable are a variety of heterocycles, permitting the coupling without over alkylation at the electrophilic sites.
Discovery of 2-(4-pyridin-2-ylpiperazin-1-ylmethyl)-1H-benzimidazole (ABT-724), a dopaminergic agent with a novel mode of action for the potential treatment of erectile dysfunction
Cowart, Marlon,Latshaw, Steven P.,Bhatia, Pramila,Daanen, Jerome F.,Rohde, Jeffrey,Nelson, Sherry L.,Patel, Meena,Kolasa, Teodozyi,Nakane, Masaki,Uchic, Marie E.,Miller, Loan N.,Terranova, Marc A.,Chang, Renjie,Donnelly-Roberts, Diana L.,Namovic, Marian T.,Hollingsworth, Peter R.,Martino, Brenda R.,Lynch III, James J.,Sullivan, James P.,Hsieh, Gin C.,Moreland, Robert B.,Brioni, Jorge D.,Stewart, Andrew O.
, p. 3853 - 3864 (2007/10/03)
A new class of agents with potential utility for the treatment of erectile dysfunction has been discovered, guided by the hypothesis that selective D 4 agonists are erectogenic but devoid of the side effects typically associated with dopaminergic agents. The lead agent 2-(4-pyridin-2-ylpiperazin- 1-ylmethyl)-1H-benzimidazole (1, ABT-724) was discovered by optimization of a series of benzimidazole arylpiperazines. This highly selective D4 agonist was found to be very potent and efficacious in vivo, eliciting penile erections in rats at a dose of 0.03 μmol/kg, with a positive response rate of 77% erectile incidence. Even at high doses, it was devoid of side effects in animal models of central nervous system behaviors, emesis, or nausea. The structure-activity relationship of the parent benzimidazole series leading to 1 is described, with the detailed in vitro and in vivo profiles described. Distinctive structural features were discovered that are associated with D 4 selective agonism in this series of analogues.