The synthesis of 4-acetoxy-azetidin-2-ones as key intermediates for β-lactams
摘要:
A short synthesis of a chiral precursor of a cephem derivative is described. Starting material is the inexpensive chiral-pool chemical aspartic acid. The central step in forming the beta-lactam moiety is an Ugi reaction.
The synthesis of 4-acetoxy-azetidin-2-ones as key intermediates for β-lactams
摘要:
A short synthesis of a chiral precursor of a cephem derivative is described. Starting material is the inexpensive chiral-pool chemical aspartic acid. The central step in forming the beta-lactam moiety is an Ugi reaction.