作者:Grigory Veinberg、Irina Shestakova、Nora Grigan、Dan Musel、Iveta Kanepe、Ilona Domrachova、Vera Grigoryeva、Olga Zharkova、Ivars Turovskis、Ivars Kalvinsh、Andris Strakovs、Edmunds Lukevics
DOI:10.1016/s0223-5234(99)80027-0
日期:1998.10
tert-Butyl cephalosporanate I,l-dioxides variously substituted in positions 7 and 3 were obtained from 7-aminodeacetoxycephalosporanic acid (7-ADCA) and 7-aminocephalosporanic acid (7 ACA). It was found that the cephalosporins containing Aspirin and Diclofenac in a prodrug form in their 3-acyloxymethyl moiety release them after hydrolytic splitting of the beta-lactam ring. They also demonstrated high efficacy as elastase inhibitors. Two of them stimulated the biosynthesis of nitric oxide in RAW 264.7 macrophages cells. The same effect observed in tumor and normal cells in the presence of cephalosporins was accompanied by cytotoxic effect in vitro. (C) Elsevier, Paris.