Phyllaemblic acid, a novel highly oxygenated norbisabolane from the roots of Phyllanthus emblica

Phyllaemblic acid, a novel highly oxygenated norbisabolane was isolated from the roots of Phyllanthus emblica, and its structure was fully characterized by spectroscopic and chemical means. The absolute stereochemistry was determined by applying modified Mosher’s method to an opportune degradation product.