Mosquito larvicidal potential of hydroxy-2-methyl-4H-pyran-4-one (MALTOL) isolated from the methanol root extract of Senecio laetus Edgew. and its in-silico study.

Abstract:

:In the present study, hydroxy-2-methyl-4H-pyran-4-one was isolated from the methanol root extract of Senecio laetus and was identified by FT-IR, 1H, 13C NMR and GC-MS. The larvicidal potential of the compound 3-hydroxy-2-methyl-4H-pyran-4-one was evaluated against the 4th instar larvae of Anopheles stephensi, Aedes aegypti and Culex quinquefasciatus at concentrations ranging from 20 to 1.25 ppm under laboratory conditions. The compound showed 100% mortality at 20 ppm against all the tested mosquitoe species and the LC50 and LC90 values were 1.22 and 7.25 ppm (An. stephensi), 2.10 and 99.84 ppm (Ae. aegypti) and 3.88 and 12.47 ppm (Cx. quinquefasciatus), respectively after 24 h of exposure period. In silico molecular docking study results reflects that hydroxy-2-methyl-4H-pyran-4-one compound showed highest binding affinity with OBP of Cx. quinquefasciatus (Glide energy score - 7.3 kcal/mol-1). The larvicidal activity of hydroxy-2-methyl-4H-pyran-4-one against tested mosquito species appears interesting and may be developed after toxicological and field evaluation.

journal_name

Nat Prod Res

journal_title

Natural product research

authors

Ali SI,Venugopalan V

doi

10.1080/14786419.2019.1634712

subject

Has Abstract

pub_date

2019-06-27 00:00:00

pages

1-5

eissn

1478-6419

issn

1478-6427

pub_type

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