A series of antibacterial N-[w, o'-(cycloalkyl, bicyclo [2.2. l] heptyl, and alkyl-substituted phenyl)-sec-alkyllpoly-(methy1ene) triamine and-tetramine hydrochloride salts were synthesized in an effort to develop efficient, nonsystemic inhibitors, particularly for Pseudomonas aeruginosa. In the 1, 5, 9-triazanonane group, 3 of 16 compounds were effective at 8-10 rc. g/mL against pseudomonads. Efficiency appeared more dependent ...