Antimycobacterial pyrroles: synthesis, anti- Mycobacterium tuberculosis activity and QSAR studies
摘要:
A number of known antifungal pyrrole derivatives and some newly synthesized compounds (5-33) were tested in vitro against Mycobacterium tuberculosis CIP 103471. The majority of rested compounds were efficient antimycobacterial agents showing MIC values ranging from 0.5 to 32 mu g/mL. A 3-D-QSAR study has been performed on these pyrrole derivatives to correlate their chemical structures with their observed inhibiting activity against M. tuberculosis. Due to the absence of information on a putative receptor responsible for this activity, classical quantitative structure-activity relationships (QSAR) and comparative molecular field analysis (CoMFA) have been applied. A model able to well correlate the antimycobacterial activity with the chemical structures of pyrrole derivatives 5-33 has been developed which is potentially helpful in the design of novel and more potent antituberculosis agents. The combination of CoMFA with classical QSAR descriptors led to a better hybrid 3-D-QSAR model, that successfully explains the structure-activity relationships (r(2) = 0.86) of the training set. A comparison between the QSAR, CoMFA and mixed QSAR-CoMFA models is also presented. The hybrid model is to be preferred, however, because of its lowest values of the average absolute error of prediction toward a limited external test set. (C) 2000 Elsevier Science Ltd. All rights reserved.
Antimycobacterial pyrroles: synthesis, anti- Mycobacterium tuberculosis activity and QSAR studies
作者:Rino Ragno、Garland R Marshall、Roberto Di Santo、Roberta Costi、Silvio Massa、Raffaello Rompei、Marino Artico
DOI:10.1016/s0968-0896(00)00061-4
日期:2000.6
A number of known antifungal pyrrole derivatives and some newly synthesized compounds (5-33) were tested in vitro against Mycobacterium tuberculosis CIP 103471. The majority of rested compounds were efficient antimycobacterial agents showing MIC values ranging from 0.5 to 32 mu g/mL. A 3-D-QSAR study has been performed on these pyrrole derivatives to correlate their chemical structures with their observed inhibiting activity against M. tuberculosis. Due to the absence of information on a putative receptor responsible for this activity, classical quantitative structure-activity relationships (QSAR) and comparative molecular field analysis (CoMFA) have been applied. A model able to well correlate the antimycobacterial activity with the chemical structures of pyrrole derivatives 5-33 has been developed which is potentially helpful in the design of novel and more potent antituberculosis agents. The combination of CoMFA with classical QSAR descriptors led to a better hybrid 3-D-QSAR model, that successfully explains the structure-activity relationships (r(2) = 0.86) of the training set. A comparison between the QSAR, CoMFA and mixed QSAR-CoMFA models is also presented. The hybrid model is to be preferred, however, because of its lowest values of the average absolute error of prediction toward a limited external test set. (C) 2000 Elsevier Science Ltd. All rights reserved.
Costi, Roberta; Artico, Marino; Di Santo, Roberto, Medicinal Chemistry Research, 1999, vol. 9, # 6, p. 408 - 423