Polyphenols from Cornulaca monacantha

The aerial parts of the Egyptian herb Cornulaca monacantha have yielded two new galloyltannin analogs (named monacanthin A and monacanthin B) characterized by protoctechuoyl moiety at C-6, and also a new flavonol glycoside, quercetin-4′- O-β- d-galactoside. The structures of the new compounds were e...

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Bibliographic Details
Published in:Phytochemistry (Oxford) 2001-10, Vol.58 (4), p.611-613
Main Authors: Kandil, Fayez E, Grace, Mary H
Format: Article
Language:English
Subjects:
Biological and medical sciences
Chemical constitution
Chenopodiaceae
Chenopodiaceae - chemistry
Cornulaca monacantha
Flavonoids
Fundamental and applied biological sciences. Psychology
Gallotannins
Magnetic Resonance Spectroscopy
Monacanthin A and B
Phenols - chemistry
Phenols - isolation & purification
Plant physiology and development
Polymers - chemistry
Polymers - isolation & purification
Polyphenols
Quercetin-4′- O-β- d-galactoside
Spectrometry, Mass, Fast Atom Bombardment
Tannins
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Summary:The aerial parts of the Egyptian herb Cornulaca monacantha have yielded two new galloyltannin analogs (named monacanthin A and monacanthin B) characterized by protoctechuoyl moiety at C-6, and also a new flavonol glycoside, quercetin-4′- O-β- d-galactoside. The structures of the new compounds were established by conventional analytical methods and confirmed by spectral analyses. Two known flavonoids, luteolin-7- O-rhamnoside, luteolin-7- O-glucoside, and two known gallotannins, penta- O-galloyl-β- d-glucose and 1,2,3,6-tetra- O-galloyl-β- d-glucose were also isolated. Two galloyltannins (named monacanthin A and monacanthin B) characterized by protoctechuoyl moiety (P) at C-6, and also a flavonol glycoside, quercetin-4′-β- d-galactoside were isolated.
ISSN:0031-9422
1873-3700
DOI:10.1016/S0031-9422(01)00265-5