A series of 3-amino-and 3-alkylamino-2-deoxy-β-d-ribo-and β-d-arabino-glycosides of 4'- demethylepipodophyllotoxin have been synthesized by means of an improved trimethylsilyliodide procedure for the podophyllotoxin-4'-demethylepipodophyllotoxin conversion, an efficient and high yielding synthesis of silyl glycoside donors of 3-azido-2, 3- dideoxy-β-d-ribo-and β-d-arabino-hexopyranosides and stereoselective glycosylations. In ...
