摘要:
The present invention provides a safe and effective process for the selective oxidation of a 5-O-protected-LLF-28249-α compound to the corresponding 23-keto compound of formula I wherein R is a protecting group. The present invention also provides the use of the selective oxidation process in the manufacture of moxidectin.
摘要:
The present invention is directed to processes associated with the preparation of [2-(8,9-dioxo-2,6-diazabicyclo[5.2.0]non-1(7)-en-2-yl)ethyl]phosphonic acid (perzinfotel).