“…[1][2][3][4][5] In search of plant-based potent insecticides, [6][7][8][9][10] current investigations on the petroleum ether extract of the dried whole fruits of P. nigrum have resulted in the isolation of two new, seven hitherto unreported from this plant and eleven known compounds. Compounds isolated from petroleum ether extract included stigmastanol (3), 11) bsitosterol (4) 12) stigmasterol (5), 12) stigmastanol 3-O-b-D-glucopyranoside (6), 11,13) b-sitosterol 3-O-b-D-glucopyranoside (7), [13][14][15][16] [(2E,4E)-octadienoyl]-N-isobutylamide (8), 17) sarmentine (9), 18) [(2E,4E)-dodecadienoyl]-N-isobutylamide (10), 19) [(2E,4E)-dodecadienoyl]pyrrolidine (11) [4], hexadecanoic ethyl ester (12), 20) octadecanoic acid (13), 21) pellitorine (14) [18], hexadecanoylpyrrolidine (15), 22) [(2E)-octadecanoyl]pyrrolidine (16), 22) 1-[(2E,4E,12Z)-octadecatrienoyl]-N-isobutylamide (17), 23) piptaline (18), 24) 1-[7-(3,4-methylenedioxyphenyl)-(2E,4E)-heptadienoyl]-N-isobutylamide (19), 25) 1-(3,4-methylenedioxyphenyl)-(1E)-tetradecene (20), 18) using different chromatographic techniques. The toxicities of 8-11, 14-17 and 19 were determined against fourth instar larvae of Aedes aegypti by WHO method 26) and were found ...…”