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Updated: Sep 30, 2026

Characterizing Modulators of Protease-Activated Receptors with a Calcium Mobilization Assay Using a Plate Reader
Published on: May 24, 2024
Novel diphenylalkyl piperazine derivatives with dual calcium antagonistic and antioxidative activities
Makoto Kimura1, Tomoko Masuda, Koji Yamada
1Pharmaceutical R & D Laboratories, POLA Chemical Industries Inc., 560, Kashio-cho, Totsuka-ku, Yokohama, Kanagawa 244-0812, Japan. m-kimura@pola.co.jp
Abstract:
Two types of novel diphenylalkyl piperazine derivatives containing the thio or aminopropanol moiety substituted by phenyl or benzyl group were synthesized, and evaluated for their calcium antagonistic and antioxidative activities. These compounds showed apparent inhibitions against KCl-induced contractions in isolated rat aorta. Among them, phenylamino compound 9 and benzylamino compound 13 also possessed potent inhibitory activities against auto-oxidative lipid peroxidations in canine brain homogenates. Two representative compounds 3a and 9 were evaluated for their inhibitory activities against KCl-induced contractions in isolated canine arteries (basilar, coronary, mesenteric, and renal). Both compounds showed the most potent inhibitions to basilar artery.
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