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。