These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Structure-based design, synthesis, and A-site rRNA cocrystal complexes of functionally novel aminoglycoside antibiotics: C2" ether analogues of paromomycin.
    Author: Hanessian S, Szychowski J, Adhikari SS, Vasquez G, Kandasamy P, Swayze EE, Migawa MT, Ranken R, François B, Wirmer-Bartoschek J, Kondo J, Westhof E.
    Journal: J Med Chem; 2007 May 17; 50(10):2352-69. PubMed ID: 17458946.
    Abstract:
    A series of 2"-O-substituted ether analogues of paromomycin were prepared based on new site-selective functionalizations. X-ray cocrystal complexes of several such analogues revealed a new mode of binding in the A-site rRNA, whereby rings I and II adopted the familiar orientation and position previously observed with paromomycin, but rings III and IV were oriented differently. With few exceptions, all of the new analogues showed potent inhibitory activity equal or better than paromomycin against a sensitive strain of S. aureus. Single digit microM MIC values were obtained against E. coli, with some of the ether appendages containing polar or basic end groups. Two analogues showed excellent survival rate in a mouse septicemia protection assay. Preliminary histopathological analysis of the kidney showed no overt signs of toxicity, while controls with neomycin and kanamycin were toxic at lower doses.
    [Abstract] [Full Text] [Related] [New Search]