Anti-Infective Agents in Medicinal Chemistry

(Formerly Current Medicinal Chemistry - Anti-Infective Agents)

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Generation and Analysis of Interaction Energy Maps of p-Substituted Benzoic Acid N'-(5-Nitrothiophen-2-yl)Methylenehydrazides Active Against Multidrug-Resistant Staphylococcus aureus

Author(s): Andrea Masunari, Ieda Yuriko Sonehara, Leoberto Costa Tavares.

Abstract:

Studies in 3D molecular fields generally contain a large amount of data, some of which are redundant or not relevant. The program Volsurf, a quite fast method, is able to compress the relevant information present in 3D molecular structures into a few descriptors that represent the physicochemical properties. In this study eighteen p-substituted benzoic acid N-(5-nitrothiophen-2-yl)methylenehydrazides with antimicrobial activity were evaluated against multidrug-resistant Staphylococcus aureus, correlating the three-dimensional characteristics of the ligands with their respective bioactivities. Structures were obtained by CORINA program, and using a GRID force field, the following probes have been used to generate their corresponding 3D interaction energies (MIFs): water, DRY, carbonyl oxygen atom and amide NH group. Calculations using Volsurf resulted in a statistically consistent model with 48 structural descriptors showing that hydrophobicity is a fundamental property in the analyzed biological response. Results have shown the potential of studied compounds as alternatives to the treatment of infections caused by multidrug-resistant Staphylococcus aureus.

Keywords: 3D QSAR, volsurf, nifuroxazide, MRSA, antimicrobials

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Article Details

VOLUME: 9
ISSUE: 1
Year: 2010
Page: [1 - 8]
Pages: 8
DOI: 10.2174/187152110790886754