Patent ID: 7855197

Claim:
A method of treatment of a fungal infection due to Candida albicans , Gram negative bacterial infection due to E. coli or P. auroginosa , or Gram positive bacterial infection due to S. aureus or methicillin resistant S. aureus , the method comprising administering to a subject having an area infected with Candida albicans, E. coli, P. aeurginosa, S. aureus or methicillin resistant S. aureus , by systemic administration or by local application to said infected area, a therapeutically effective amount of a compound selected from the group consisting of compounds of formula wherein: R 1 , R 2 , R 3 and R 4 each represent n-propyl; R 1 , R 2 , R 3 and R 4 each represent n-butyl; R 1 , R 2 , R 3 and R 4 each represent n-pentyl; R 1 , R 2 , R 3 and R 4 each represent iso-pentyl; R 1 represents n-butyl, R 2 represents n-butyl, R 3 represents n-propyl and R 4 represents n-propyl; R 1 represents n-hexyl, R 2 represents n-hexyl, R 3 represents n-propyl and R 4 represents n-propyl; R 1 , R 2 , R 3 and R 4 each represent iso-butyl; R 1 represents n-butyl, R 2 represents n-butyl, R 3 represents iso-pentyl and R 4 represents iso-pentyl; R 1 represents ethyl, R 2 represents ethyl, R 3 represents n-propyl and R 4 represents n-propyl; R 1 represents n-pentyl, R 2 represents n-pentyl, R 3 represents n-propyl, R 4 represents n-propyl; R 1 represents n-butyl, R 2 represents n-butyl, R 3 represents n-pentyl and R 4 represents n-pentyl; R 1 represents ethyl, R 2 represents cyclohexyl, R 3 represents ethyl and R 4 represents cyclohexyl; R 1 represents methyl, R 2 represents methyl, R 3 represents n-propyl, R 4 represents n-propyl; and R 1 represents ethyl, R 2 represents ethyl, R 3 represents n-heptyl and R 4 represents n-heptyl; wherein X P− is a counteranion and P is 1, 2 or 3, and exposing said infected area to light to render active said compound and thereby effecting said treatment of said fungal infection, said Gram negative bacterial infection or said Gram positive bacterial infection.