Topological descriptors in modelling antimalarial activity: N(1)-(7-chloro-4-quinolyl)-1,4-bis(3-aminopropyl)piperazine as prototype

The QSAR of antimalarial activity of two distinct series of N(1)-(7-chloro-4-quinolyl)-1,4-bis(3-aminopropyl) piperazine analogues are investigated with DRAGON descriptors in order to rationalize their activity. Of these two series of compounds, one has amide characteristics and the other has amine...

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Published in:Journal of enzyme inhibition and medicinal chemistry 2009-02, Vol.24 (1), p.94-104
Main Authors: Deshpande, Shreekant, Solomon, V Raja, Katti, Setu B, Prabhakar, Yenamandra S
Format: Article
Language:English
Subjects:
Amides
Amines
Antimalarials - chemistry
Antimalarials - pharmacology
Hydrophobic and Hydrophilic Interactions
Models, Molecular
Molecular Conformation
Piperazines - chemistry
Piperazines - pharmacology
Quantitative Structure-Activity Relationship
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container_title Journal of enzyme inhibition and medicinal chemistry
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creator Deshpande, Shreekant
Solomon, V Raja
Katti, Setu B
Prabhakar, Yenamandra S
description The QSAR of antimalarial activity of two distinct series of N(1)-(7-chloro-4-quinolyl)-1,4-bis(3-aminopropyl) piperazine analogues are investigated with DRAGON descriptors in order to rationalize their activity. Of these two series of compounds, one has amide characteristics and the other has amine characteristics. Both the analogues have shared radial centric information (ICR) as common modelling descriptor with increased centricity in the molecules as preferred feature for antimalarial activity. Apart from this, the models of amide analogues suggested in favor of distantly placed nitrogen(s) and unfavorable nature of carbonyl moieties adjacent to nitrogen in the varying portion of the molecule for the activity. Moreover, for these analogues, the regression models have preferred the lone pair electrons on heteroatoms (N and O) for purposes other than H-bonds for better activity. In case of amine analogues, the models suggested in favor of compact structural moieties in the varying parts of the molecule for improved activity. Also, for these analogues, hydrophobicity of the compound is an important factor for influencing activity. The variations in the models of amide and amine analogues are attributed to the characteristic functional differences of these analogues.
doi_str_mv 10.1080/14756360801915377
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subjects Amides
Amines
Antimalarials - chemistry
Antimalarials - pharmacology
Hydrophobic and Hydrophilic Interactions
Models, Molecular
Molecular Conformation
Piperazines - chemistry
Piperazines - pharmacology
Quantitative Structure-Activity Relationship
title Topological descriptors in modelling antimalarial activity: N(1)-(7-chloro-4-quinolyl)-1,4-bis(3-aminopropyl)piperazine as prototype
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