NEW DERIVATIVES OF 1-HYDROXY-BENZO-2,3,1-DIAZABORINE AND PROCESS FOR THEIR PREPARATION

摘要

Derivatives of 1-hydroxy-benzo-2,3,1-diazaborines which are substituted in the 2-position by a sulfo group linked to a defined aliphatic radical like alkyl or alkylene and salts of such compounds. The compounds are highly effective against gram-negative bacteria in pharmaceutical compositions containing these diazaborines. The new compounds are prepared by reacting o-formyl phenyl boric acid with the respective aliphatic sulfonic acid hydrazide.