Triterpenoid saponins from Gymnema sylvestre

Besides six known gymnemic acids, four new tritepenoid saponins, gymnemasins A, B, C and D, isolated from the leaves of Gymnema sylvestre, were identified as 3-O-[β- d-glucopyranosyl (1 → 3)-β- d-glucuronopyranosyl ]-22-O- tigloyl-gymnemanol , 3-O-[β- d-glucopyranosyl (1 → 3)-β- d-glucuronopyranosyl...

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Bibliographic Details
Published in:Phytochemistry (Oxford) 1996-03, Vol.41 (4), p.1181-1185
Main Authors: Sahu, Niranjan P., Mahato, Shashi B., Sarkar, Sudip K., Poddar, Gurudas
Format: Article
Language:English
Subjects:
Biological and medical sciences
Biotechnology
Carbohydrate Sequence
Chemical constitution
Fundamental and applied biological sciences. Psychology
Magnetic Resonance Spectroscopy
Molecular Sequence Data
Plant physiology and development
Plants, Medicinal - chemistry
Saponins - chemistry
Saponins - isolation & purification
Spectrometry, Mass, Fast Atom Bombardment
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Summary:Besides six known gymnemic acids, four new tritepenoid saponins, gymnemasins A, B, C and D, isolated from the leaves of Gymnema sylvestre, were identified as 3-O-[β- d-glucopyranosyl (1 → 3)-β- d-glucuronopyranosyl ]-22-O- tigloyl-gymnemanol , 3-O-[β- d-glucopyranosyl (1 → 3)-β- d-glucuronopyranosyl ]- gymnemanol , 3-O-β- d-glucuronopyranosyl -22-O- tigloyl-gymnemanol and 3-O-β- d-glucuronopyranosyl-gymnemanol , respectively. The aglycone, gymnemanol, which is a new compound, was characterized as 3β,16β,22α,23,28-pentahydroxyolean-12-ene.
ISSN:0031-9422
1873-3700
DOI:10.1016/0031-9422(95)00782-2