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Andropanolide and Isoandrographolide, Minor Diterpenoids from Andrographis paniculata:  Structure and X-ray Crystallographic Analysis

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journal contribution
posted on 24.03.2006, 00:00 authored by Swapan Pramanick, Sukdeb Banerjee, Basudeb Achari, Binayak Das, Ashis K. Sen,, Sibabrata Mukhopadhyay, Alain Neuman, Thierry Prangé
Phytochemical investigation of the leaves of Andrographis paniculata has led to the isolation of a new labdane type diterpenoid, andropanolide (1), along with seven known diterpenoids including isoandrographolide (2), previously reported as a rearrangement product of andrographolide. The structures and stereochemistry of compounds 1 and 2 were established by X-ray crystallographic analysis.