a Showa Pharmaceutical University, 3-3165 Higashi-Tamagawagakuen, Machida, Tokyo 194-8543, Japan b Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan
Abstract:
Aromatic N-methyl amides containing N-(2-pyridyl) and 2-pyridinecarboxamide or 2,6-pyridinedicarboxamide moieties switch their conformation from cis to trans depending upon the addition of acid.