![Sample our Bioscience journals, sign in here to start your access, Latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5925/TOC-Subject-Sample-2021-Bioscience.jpg"})
Abstract
Two triterpenes, β-amyrin and 12-oleanene 3β, 21β-diol, were isolated as a mixture from the chloroform soluble fraction of an ethanol extract of Duranta repens Linn (Verbenaceae) stem. The structures of the two compounds were confirmed by analysis of their IR, 1H-NMR, 13C-NMR and LC-MS spectral data. The mixture of β-amyrin and 12-oleanene 3β, 21β-diol (compound 1) was highly effective against the larvae of the mosquito, Culex quinquefasciatus Say (Diptera: Culicidae), as a mosquitocide.
Acknowledgements
The authors are grateful to Professor Sohorab Ali, Department of Zoology, Rajshahi University, for helping Farjana Nikkon to perform the larvicidal activities and Professor Peter G Waterman, Centre for Phytochemistry and Pharmacology, Southern Cross University, Lismore, Australia, for running LC-MS and NMR spectra.
Declaration of interest
This work was supported by a Grant for Scientific Research (Fund No. BPROM/SHA-9/B-ANU-PRO/2000/324) from the Ministry of Science and Technology, Bangladesh.