Nature,An Excellent Synthetic Chemist C0+H,0 44 Nature, An Excellent Synthetic Chemist 紫杉醇 Taxol Me Me HO Me AcO OBz H Me OAc OH O O O OH Ph NH O O 红豆杉 Yew Ұ750 Ұ1300 Nat. Prod. Chem. Nat. Prod. Chem. hu CO2 + H2O $ $ $ $ $ $ $ $ Blockbuster Drug: 10 billion $ in 2000