Research Progress on the Synthetic Methods of Pancratistatin
Pancratistatin is a natural alkaloid with prominent antitumor activity.Structurally,pancratistatin has an isocar-bostyril core skeleton,fused with a highly oxygenated cyclohexane ring,with six consecutive stereogenic centers.Regioselec-tive introduction of substituted aromatic ring into the core structure,construction of the lactam ring,and control of stereocen-ters are major challenges in the synthesis of pancratistatin.The preliminary synthetic work of pancratistatin and the research progresses of its total synthesis since 2000 are summarized,and the synthetic strategies and key steps during the total synthesis are illustrated.