Triterpenoid saponins from the shells of Argania spinosa seeds.
Two new oleanene saponins were isolated from the MeOH extract of the shell of Argania spinosa. They possess protobassic acid and 16alpha-protobassic acid as aglycons. The disaccharide moiety linked to C-3 of the aglycon is made up of two glucose units; the pentasaccharide moiety linked to C-28 is made up of arabinose, xylose, and three rhamnose units. Their structures were elucidated by 1D and 2D NMR experiments including (1)H-(1)H (DQF-COSY, 1D TOCSY, and 2D HOHAHA) and (1)H-(13)C (HSQC and HMBC) spectroscopy along with mass spectrometry.
Laboratoire de Chimie des Plantes et de Synthèse Organique et Bioorganique, Faculté des Sciences, University of Rabat, B.P. 1041, RP Rabat, Morocco.
Asma
A
Alaoui
Zoubida
Z
Charrouf
Mohamed
M
Soufiaoui
Virginia
V
Carbone
Antonio
A
Malorni
Cosimo
C
Pizza
Sonia
S
Piacente
D001089:Arabinose / Q000032:analysis; D002236:Carbohydrate Conformation; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D015394:Molecular Structure; D012210:Rhamnose / Q000032:analysis; D012503:Saponins / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification; D029632:Sapotaceae / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry*; D013729:Terpenes / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification; D014994:Xylose / Q000032:analysis
D012503:Saponins; D013729:Terpenes; D014994:Xylose; D001089:Arabinose; D012210:Rhamnose