Synthesis and antibacterial activity of new quinolones containing a 7-[3-(1-amino-1-methylethyl)-1-pyrrolidinyl] moiety. Gram-positive agents with excellent oral activity and low side-effect potential
作者:Susan E. Hagen、John M. Domagala、Stephen J. Gracheck、Josephine A. Sesnie、Michael A. Stier、Mark J. Suto
DOI:10.1021/jm00032a005
日期:1994.3
S isomers of 7-[3-(1-amino-1-methylethyl)-1-pyrrolidinyl]-1,4-dihydro-4-oxoquinoline- and 1,8-naphthyridine-3-carboxylic acids was prepared to determine the effect on potency of the two methyl groups adjacent to the distal nitrogen in the pyrrolidinyl moiety. The antibacterial efficacy of these dimethylated derivatives was compared to the relevant 7-[3-(aminomethyl)-1-pyrrolidinyl] parent compounds
7- [3-(1-氨基-1-甲基乙基)-1-吡咯烷基] -1,4-二氢-4-氧代喹啉-和1,8-萘啶-3-羧酸的一系列R和S异构体制备用于确定对吡咯烷基部分中与远端氮相邻的两个甲基的效力的影响。将这些二甲基化衍生物的抗菌功效与相关的7- [3-(氨基甲基)-1-吡咯烷基]母体化合物进行了比较,并在较小程度上与7- [3-(1-氨基乙基)-1-吡咯烷基]进行了比较。类似物。使用一系列革兰氏阴性和革兰氏阳性生物体外和体外使用小鼠感染模型测定标题和参考化合物的活性。然后在光毒性小鼠模型和体外哺乳动物细胞细胞毒性方案中筛选选定的衍生物的潜在副作用。结果表明,与S异构体相比,R异构体在体外活性方面显示出2-20倍的优势,而在体内具有2-15倍的优势。尽管在体外与7- [3-(氨基甲基)-1-吡咯烷基]母体化合物等效,但7- [3-(1-氨基-1-甲基乙基)-1-吡咯烷基]类似物的R异构体显示出显着的