Total Synthesis of Taxol. 4. The Final Stages and Completion of the Synthesis
摘要:
The total synthesis of (-)-Taxol has been achieved. Functional group manipulation of diol 2 provided the ABC ring system with the correct C9-keto, C10-acetyloxy functionality. Careful optimization allowed the oxidation of the C5-C6 alkene in 4 at C5 via a hydroboration reaction. Functional group manipulation of this product, 29, provided, through two routes, the oxetane D ring as 36. Following the method developed by degradative studies provided the natural enantiomer of Taxol (1).
Total Synthesis of Taxol. 4. The Final Stages and Completion of the Synthesis
摘要:
The total synthesis of (-)-Taxol has been achieved. Functional group manipulation of diol 2 provided the ABC ring system with the correct C9-keto, C10-acetyloxy functionality. Careful optimization allowed the oxidation of the C5-C6 alkene in 4 at C5 via a hydroboration reaction. Functional group manipulation of this product, 29, provided, through two routes, the oxetane D ring as 36. Following the method developed by degradative studies provided the natural enantiomer of Taxol (1).