The preparation of 3-cyano-4,6-diaryl-pyridin-2(1H)-ones 4a . h, calcium entry blockers related to diltiazem, is described starting from 1,3-diaryl-2-propen-1-ones 5. On preliminary pharmacological tests all compounds are active and some of them show calcium antagonistic activity superior or comparable to diltiazem. (C) 2000 Elsevier Science Ltd. All rights reserved.
Fujise et al., Nippon Kagaku Zasshi, 1953, vol. 74, p. 827