A New and Efficient Strategy for the Total Synthesis of Polycyclic Diterpenoids: The Preparation of Gibberellins (+-)-GA_103 and (+-)-GA_73

摘要

The three sequences, each one involving fewer than 20 steps, were completed with essentially complete stereocontrol and are competitive in efficiency and brevity with the earlier partial syntheses beginning with fungal gibberellins, they are also significantly more direct than most earlier total syntheses of gibberellins.