Synthesis and antimicrobial evaluation of water-soluble, dendritic derivatives of epimeric 5α-cholestan-3-amines and 5α-cholestan-3-yl aminoethanoates
摘要:
To examine the effect of negatively charged steroidal amphiphiles on antimicrobial activity, two pairs of epimeric, dendritic tricarboxylato amphiphiles -4-(2-carboxyethyl)-4-[3-(5 alpha-cholestan-3-yl)ureido]heptanedioic acid (1) and 4-(2-carboxyethyl)-4-[3-(5 alpha-cholestan-3-yloxycarbonylmethyl)ureido]heptanedioic acid (2) - were synthesized. Abroad antimicrobial screen of 11 microbes revealed that these amphiphiles only showed good activity against a methicillin -resistant isolate of Staphylococcus aureus (MRSA) and modest activity against an unrelated strain of S aureus The best activity a minimal inhibitory concentration (MIC) of 27 mu M, was found for the 3 beta epimer of 1 against MRSA. (c) 2007 Elsevier Inc. All rights reserved.
Synthesis and antimicrobial evaluation of water-soluble, dendritic derivatives of epimeric 5α-cholestan-3-amines and 5α-cholestan-3-yl aminoethanoates
摘要:
To examine the effect of negatively charged steroidal amphiphiles on antimicrobial activity, two pairs of epimeric, dendritic tricarboxylato amphiphiles -4-(2-carboxyethyl)-4-[3-(5 alpha-cholestan-3-yl)ureido]heptanedioic acid (1) and 4-(2-carboxyethyl)-4-[3-(5 alpha-cholestan-3-yloxycarbonylmethyl)ureido]heptanedioic acid (2) - were synthesized. Abroad antimicrobial screen of 11 microbes revealed that these amphiphiles only showed good activity against a methicillin -resistant isolate of Staphylococcus aureus (MRSA) and modest activity against an unrelated strain of S aureus The best activity a minimal inhibitory concentration (MIC) of 27 mu M, was found for the 3 beta epimer of 1 against MRSA. (c) 2007 Elsevier Inc. All rights reserved.