Cyanoguanidine derivatives of loratadine (3a–i) were synthesized and screened for antitumor and anti-inflammatory activity. The most promising compound 3c (R = n-C8H17) possessed at least twofold higher in vitro cytotoxicity than 5-fluorouracil against mammary (MCF-7 and MDA-MB 231) as well as colon (HT-29) carcinoma cells. The mode of action, however, is so far unclear. The participation of the COX-1/2
合成了氯雷他定的氰胍衍生物(3a–i),并筛选了其抗肿瘤和抗炎活性。最有前途的化合物3c(R = n -C 8 H 17)具有比5-氟尿嘧啶对乳腺癌(MCF-7和MDA-MB 231)以及结肠(HT-29)癌细胞高至少两倍的体外细胞毒性。但是,到目前为止,行动方式还不清楚。但是,COX-1 / 2酶参与细胞毒性作用的可能性很小。然而,在二甲苯诱导的小鼠耳部肿胀试验中,所有化合物均显示出比布洛芬更强的体内抗炎活性。
Sulfonylcyanoguanidines and sulfonamidonitroethylenes are bioisosteres of hypoglycemic sulfonylureas and were prepared and evaluated for their insulin release potency from rat pancreatic islets. At 25 mu M, both bioisosteres of glibenclamide, sulfonylcyanoguanidine 22 and sulfonamidonitroethylene 23, were as potent as their parent on insulin secretion.