Synthesis of 3,4,5-Trisubstituted 1H-Pyrazoles Based on Diazoketones with a Diterpene Fragment
摘要
A new regioselective approach to the synthesis of 3,4,5-pyrazoles containing a diterpene moiety via 1,3-dipolar cycloaddition of diazoketones obtained from N-maleopimarimide-substituted amino acids to an allenoate was proposed.