ChemInform Abstract: Diastereoselective Access to Polyoxygenated Polycyclic Spirolactones Through a Rhodium‐Catalyzed [3 + 2] Cycloaddition Reaction: Experimental and Theoretical Studies.

Abstract

Depending on the length of the chain between the diazo moiety and the exocyclic double bond either the spiro compounds (II and IV) or the pyran derivatives (VI) are formed.