Two New Bidesmoside Triterpenoid Saponins from the Seeds of Momordica charantia L.

• Main Authors: Lin Ma, Ai-Hua Yu, Li-Li Sun, Wan Gao, Meng-Meng Zhang, Ya-Lun Su, Hua Liu, Tengfei Ji
• Format: Article
• Language: English
• Published: MDPI AG 2014-02-01
• Series: Molecules
• Subjects: Momordica charantia L.; bidesmoside; triterpenoid saponin; NMR; MS
• Online Access: http://www.mdpi.com/1420-3049/19/2/2238

Two new bidesmoside triterpenoid saponins which were identifed as 28-O-β-D-xylopyranosyl(1→3)-β-D-xylopyranosyl(1→4)-α-L-rhamnopyranosyl(1→2)-[α-L-rhamno-pyranosyl(1→3)]-β-D-fucopyranosyl gypsogenin 3-O-β-D-glucopyranosyl (1→2)-β-D-glucopyranosiduronic acid (C1) and 28-O-β-D-xylopyranosyl(1→4)-α-L-rhamnopyranosyl (1→2)-[α-L-rhamnopyranosyl(1→3)]-β-D-fucopyranosyl gypsogenin 3-O-β-D-gluco-pyranosyl(1→2)-β-D-glucopyranosiduronic acid (C2) were isolated together with two known compounds from the seeds of Momordica charantia L. Their structures were elucidated by the combination of mass spectrometry (MS), one and two-dimensional NMR experiments and chemical reactions.