A series of quinoline and naphthyridine antibacterial agents possessing an acyclic or cyclic gem-disubstituted piperazine substituent at the C-7 position have been prepared and evaluated in vitro and in vivo for antibacterial activity against a variety of Gram-positive and Gram-negative organisms. They are, however, not as active as quinolones or naphthyridines with a monosubstituted piperazine substituent at C-7. The chemical synthesis of these derivatives is also described.
已经制备并评估了一系列含有在C-7位置带有非环状或环状的双取代哌嗪基团的喹啉和萘啶类抗菌剂,用于对多种革兰氏阳性菌和革兰氏阴性菌的体外和体内抗菌活性的研究。然而,它们并不像在C-7位置带有单取代哌嗪基团的喹诺酮或萘啶那样有效。这些衍生物的化学合成也被描述了。
Cyclic dipeptides of the formula cyclo(-Acc-X-), where Acc = 1-aminocyclopropane-1-carboxylic acid, X = Gly, Ala, Val, Leu, Phe or Tyr, were synthesized. The prepared 2,5-piperazinediones showed no proliferative or antiproliferative activity on normal human embryo cells as well as on HL60 leukemia cells. Results of trace memory assays in mice were negative.