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Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach
Published on: June 10, 2021
Synthesis and Evaluation of Diphenylpyrazine Cyclic Amine Derivatives as IP Receptor Agonists
Xianrong Cai1, Guoyi Lin1, Juan Tang1
1School of Chemistry Engineering, Sichuan University of Science & Engineering, Zigong 643000, China.
Abstract:
Pulmonary arterial hypertension (PAH) is a severe, progressive condition with limited treatments. This study focuses on developing novel IP receptor agonists for PAH therapy. By modifying MRE-269, a highly selective IP receptor agonist, we designed and synthesized 2-cyclic amino-5,6-diphenylpyrazine derivatives. Systematic evaluation revealed that introducing a dimethyl group at the C3 position of the piperidine ring significantly improved antiaggregatory activity. The optimal compound 6c-14S demonstrated a 40-fold increase in potency compared to MRE-269. Docking studies confirmed its high selectivity for the IP receptor, and pharmacokinetic studies showed a 3-fold improvement in half-life, suggesting its potential for therapeutic development.
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