Mesoionic xanthine analogs: phosphodiesterase inhibitory and hypotensive activity
作者:Richard A. Glennon、Michael E. Rogers、J. Doyle Smith、M. K. El-Said、John L. Egle
DOI:10.1021/jm00138a002
日期:1981.6
Several mesoionic thiazolo[3,2-alphapyrimidines and mesoionic 1,3,4-thiadiazol[3,2-alpha-pyrimidines were evaluated as inhibitors of cyclic-AMP phosphodiesterase. While small alkyl substituents at the 6 position have no significant effect on activity, phenyl and benzyl substituents enhance activity. Mesoionic structures such as 1 (R2 = H; R8 = Et) possess 20 to 40 times the activity of theophylline
评价了几种中离子噻唑并[3,2-α-嘧啶和中离子1,3,4-噻二唑[3,2-α-嘧啶]作为环AMP磷酸二酯酶的抑制剂。尽管在6位的小的烷基取代基对活性没有显着影响,但是苯基和苄基取代基增强了活性。当R6取代基为苯基或4-氯苄基时,介电结构如1(R2 = H; R8 = Et)的活性为茶碱的20至40倍。在2位上的甲基和乙基取代基本上消除了活性。尽管受到溶解性问题的困扰,但是发现一些中离子衍生物在体内显示出弱的降压作用。