A synthetic route to an unnatural diastereoisomer of colombiasin A is described. Key features are an arene alkylation with a gamma -methylene-gamma -butyrolactone and an intramolecular Diels-Alder cycloaddition. (C) 2001 Elsevier Science Ltd. All rights reserved.
A synthetic route to an unnatural diastereoisomer of colombiasin A is described. Key features are an arene alkylation with a gamma -methylene-gamma -butyrolactone and an intramolecular Diels-Alder cycloaddition. (C) 2001 Elsevier Science Ltd. All rights reserved.
A synthetic route to an unnatural diastereoisomer of colombiasin A is described. Key features are an arene alkylation with a gamma -methylene-gamma -butyrolactone and an intramolecular Diels-Alder cycloaddition. (C) 2001 Elsevier Science Ltd. All rights reserved.