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Acylated 5,7,2',6'-oxygenated flavone glycosides from Andrographis alata
Biswanath Das1, R Ramu, Yerra Koteswara Rao
1Indian Institute of Chemical Technology, Organic Chemistry-I, Uppal Road, Hyderabad 500 007, Andhra Pradesh, India. biswanathdas@yahoo.com
Phytochemistry
|April 21, 2006
Abstract:
Five acylated 5,7,2',6'-oxygenated flavone glycosides along with the known 5,2',6'-trihydroxy-7-methoxyflavone-2'-O-beta-d-glucopyranoside have been isolated from the whole plant of Andrographis alata. The structures of the compounds were established from spectral (mainly 1D and 2D NMR) and chemical studies.
