A Facile and Efficient Synthesis of 4β-Aminopodophyllotoxins.

Abstract 4β-amino-4-desoxypodophyllotoxin and 4β-amino-4′-desmethyl-4-desoxypodophyllotoxin have been synthesized by reduction of the corresponding 4β-azidopodophyllotoxin derivatives with samarium diiodide in excellent yields under convenient and mild conditions.