Patent ID: 7737132

Claim:
A method for potentiating the activity of an antibiotic to inhibit the growth of a bacterium which is resistant to said antibiotic, comprising contacting the bacterium with said antibiotic and a compound having the formula wherein R 2 is H, OH, OAc, or O(CH 2 CH 2 O) n ; R 3 is H, OH, OAc, OSO 3 Na, or NH 2 ; and R 6 is H, NH 2 , S(CH 2 ) m NH 2 , I, N 3 , SH, lower alkyl, S-alkylguanidyl, O-alkylguanidyl, S-aminoalkyl, O-aminoalkyl, aminoalkyl, aralkyl, aryl, heterocyclic ring(s), OSO 3 Na or N which is mono, di or tri-substituted with alkyl, aralkyl, aryl, heterocyclic ring or heterocyclic alkyl, and any of which substituents can be further substituted with N, O or S which can be further substituted with H, alkyl, aralkyl or aryl, wherein n is from about 1 to about 10, and wherein m is from about 1 about 10.