The structures of pseudoanisatin and its novel base-catalysed rearrangement product
Abstract
The oxidation product of pseudoanisatin (4), the structure of which was known from an X-ray crystallographic analysis, has been assigned as (7) on the basis of chemical and spectral evidence. A base-catalysed rearrangement product of pseudoanisatin, assigned structure (8) from an X-ray crystallographic analysis, is formed, it is concluded, via a novel stereoselective reaction which involves steric inversions at C-3 and C-4.