Oleander is an evergreen shrub or small tree from 5 to 25-ft tall containing gummy sticky sap in the dogbane family Apocynaceae. In this study, the alkaloid compounds of Nerium oleander (NO) have been evaluated. The chemical compositions of the leaf ethanol extract of N. oleander were investigated using gas chromatography-mass specroscopy (GC-MS). GC-MS analysis of N. oleander alkaloid leaf ethanol extract revealed the existence of the 5-hydrooxy methylfurfural, β-d-allopyranoside, methyle 6dioxy-2-o methyl, cycloheptasiloxane, tetradecamethyle, cyclooctasiloxane, hexadecamethyl, cyclononasiloxane, octadecamethyl, cyclodecasiloxane, eicosamethyl, 2-cyclopenten-1-one, 2-hydroxy-3-methyl, 9.12.15-octadecatrienoic acid, 2,3bis[trimethylsilyl]oxy] propyl ester, octadecane, 3-ethyl-5-(2ethylbutyl), 1-monolinoleoylglycerol trimethylsilyl ether, 1.1.3.3.5.5.7.7.9.9-decamethyl-9-(2-methyl propoxy)pentasiloxane, 2-cyclohexen-1-one, 4-(hydroxybutyle)-3.5.5-trimethyl, octasiloxane, 1.1.3.3.5.5.7.7.9.9.11.11.13.13.15.15-hexadecamethyl and 3-eicosene. Eight chemical alkaloids constituents have been identified from methanolic extract of the Nerium oleander.

In this study, the alkaloid compounds of Ricinus communis have been evaluated. The chemical compositions of the leaf ethanol extract of R. communis were investigated using gas chromatographymass spectroscopy (GC-MS). GC-MS analysis of R. communis alkaloid leaf ethanol extract revealed the existence of the n-haxadecanoic acid, octadecanoic acid, 1-hexadecanol. 2-Methyl, gibb-3-ene-1. 10decarboxylic acid , 2,4a. 7trihydroxy-1-methyl-8-methylene, 1.4a-lactone. 10-methyl, L-valine, ethyl ester, hexadecamethyl, tetradecamethyl, octadecamethyl, butanedioic acid, hydroxyl. diethyl ester, 1.1.3.3.5.5.7.7.9.9.11.11.13.13.15.15 hexadecamethyl, triethyl citrate, diethyl phthalate, and 3-octadecene.