Filing Date: 2007-07-18.-- Priority Data: EP 06380204.5 (2006-07-19)
The present invention refers to a process for rearranging a spirolactam (I) under acidic conditions to yield an oxabicyclo [4.3.0] none (II) or (III) or a 1-aza-2oxaspiro derivative (IV). The present invention also refers said oxabicyclo [4.3.0] none and 1-aza-2oxaspiro derivatives
Peer reviewed