A process for preparing a compound of the formula ##STR1## wherein R.sup.1, m, o and p are described below, which comprises adding a base of the formula ##STR2## wherein R.sup.2, R.sup.3 and R.sup.4 are as described below, to a solution comprising a compound of the formula ##STR3## wherein R.sup.1, m, o and p are as described below, and a halonitromethane of the formula O.sub.2 NCH.sub.2 X, wherein X is a halogen atom dissolved in a non-aqueous inert solvent. The compounds of formula III are useful as intermediates in the syntheses of azabicyclo quinoline carboxylic acids, and their pharmaceutically acceptable salts and prodrugs, having antibacterial activity. This invention also relates to the base of formula IV wherein each R.sup.2 is butyl, R.sup.3 is hydrogen and each R.sup.4 is t-butyl.
一种制备公式##STR1##化合物的方法,其中R.sup.1、m、o和p如下所述,包括向包含公式##STR3##化合物的溶液中加入公式##STR2##的碱,其中R.sup.2、R.sup.3和R.sup.4如下所述,以及溶解在非
水性惰性溶剂中的卤素原子的卤代
硝基甲烷O.sub.2 NCH.sub.2 X,其中X。公式III的化合物作为合成具有抗菌活性的
氮杂双环喹啉羧酸及其药用可接受盐和前药的中间体是有用的。本发明还涉及公式IV的碱,其中每个R.sup.2是丁基,R.sup.3是氢,每个R.sup.4是t-丁基。