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Updated: Jun 6, 2026

Synthesis of Triazole and Tetrazole-Functionalized Zr-Based Metal-Organic Frameworks Through Post-Synthetic Ligand Exchange
Published on: June 23, 2023
Synthesis of novel ligustrazine derivatives as NA+/H+ exchange inhibitors
1Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing, P. R. China.
Abstract:
A novel series of 3,5,6-trimethylpyrazine-2-methoxy (or methylamino) substituted benzoyl-guanidine derivatives were designed and synthesized as Na(+)/H(+) exchange (NHE) inhibitors. In this study, compounds with electron-withdrawing substituents on the benzene ring seemed to improve NHE-1 inhibitory activities. Compounds 6d, 6k, and 6l were found to be potent inhibitors of NHE-1 (IC(50)=3.0±1.6, 3.0±1.4, and 1.6±0.4 nmol/l, resp.). Furthermore, they showed a remarkable reduction of infarct size in the rat myocardial infarction model in vivo.
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