Bu çalışmada Nigella arvensis türünden 13 tane glikozid izole edilerek, izole edilen bileşiklerden iki tanesinin yapısı spektral teknikler kullanılarak 3-O-β-D glucopyranosyl-(1→2)-β-D-glucopyranosyl-(1→2)-β-D-ribopyranoside ve 3-O-β-D-glucopyranosyl-(1→2)-β-D-glucopyranosyl-(1→2)-β-D-ribopyranosyl-28-O-[α-L rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)-β-D-glucopyranos-yl] olarak belirlenmiştir.Anahtar Kelimeler: Nigella arvensis, triterpenoid saponin, oleanan In this thesis, 13 glycosides were isolated from Nigella arvensis species and structures of the two of the isolated compounds determined as 3-O-β-D glucopyranosyl-(1→2)-β-D-glucopyranosyl-(1→2)-β-D-ribopyranoside. and 3-O-β-D-glucopyranosyl-(1→2)-β-D-glucopyranosyl-(1→2)-β-D-ribopyranosyl-28-O-[α-L rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl] by using spectroscopic techniques.Keywords: Nigella arvensis, triterpenoid saponin, oleanane 86