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
作者:Fujise et al.
DOI:——
日期:——
Environmentally benign syntheses of flavanones
作者:Po-Yuan Chen、Tzu-Pin Wang、Michael Y. Chiang、Keng-Shian Huang、Cherng-Chyi Tzeng、Yi-Long Chen、Eng-Chi Wang
DOI:10.1016/j.tet.2011.04.070
日期:2011.6
water in the presence of DABCO at roomtemperature gave 3-hydroxy-1-(2-hydroxylphenyl)-3-arylpropan-1-ones (3a–i) as intermediates. Followed by an intramolecular dehydration of the 3a–i with the modified Mitsunobu’s reaction, the target flavanones (4a–i) were obtained. Moreover, the reaction of 1 and 2 at the same conditions but at reflux gave flavanones in onepot with good yields.