The ring opening of lactones and lactams

摘要

H:,/dar/lnenvoven/NRPortbl/DCC/DA R/5069804_L.doc-12/04/2013 The present invention provides a novel process for opening a lactone and/or a lactam ring. More particularly, the present invention provides a process that employs a novel catalyst in the opening of a lactone ring and/or a lactam ring. Additionally, the present invention also provides a novel deprotection process of any protecting group present in either the lactone ring-containing and/or lactam ring-containing compound and/or in the ring-opened product thereof.