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Abstract
Jones oxidation of Andrographolide (1), gave mixture of three products (3-dehydroandrographolide (5), 3,19-bis dehydroandrographolide (6) and 19-dehydroandrographolide (7). Tritylation of andrographolide at C19–OH resulted to products 8 and diene 9, which can be converted to its acetate 10 and oxidation product 11.
†CDRI Communication No. 6637.
Acknowledgements
The authors are thankful to Dr A.P. Bhaduri, ex. Head of Medicinal & Process Chemistry Division, CDRI Lucknow for his keen interest in the field of Andrographolides and helpful discussions. Authors V.T.M. and S.K. are thankful for Council of Scientific and Industrial Research, New Delhi for SRF fellowship.
Notes
†CDRI Communication No. 6637.