Two triterpenoid saponins from Neonauclea sessilifolia.
From the dried roots of Neonauclea sessilifolia (Rubiaceae), two new triterpenoid saponins, 3-O-beta-D-glucopyranosyl-(1-->2)-beta-D-quinovopyranosyl quinovic acid (1) and 3-O-alpha-L-rhamnopyranosyl-(1-->4)-beta-D-quinovopyranosyl pyrocincholic acid 28-O-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosyl ester (2), were isolated, together with five known saponins. The structures of the new saponins were determined by spectroscopic and chemical means.
Kobe Pharmaceutical University, Higashinada-ku, Kobe, Japan.
Atsuko
A
Itoh
Takao
T
Tanahashi
Naotaka
N
Nagakura
Toyoyuki
T
Nishi
D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008968:Molecular Conformation; D018517:Plant Roots / Q000737:chemistry; D019666:Rubiaceae / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification; D013055:Spectrophotometry, Infrared; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
C487322:3-O-alpha-L-rhamnopyranosyl-(1-4)-beta-D-quinovopyranosyl pyrocincholic acid 28-O-beta-D-glucopyranosyl-(1-6)-beta-D-glucopyranosyl ester; C487323:3-O-beta-D-glucopyranosyl-(1-2)-beta-D-quinovopyranosyl quinovic acid; D012503:Saponins; D014315:Triterpenes