1: 6,7-O,O-demethylene-6,7-O,O-dimethylpodophyllotoxin With trimethylsilyl iodide in 1,2-dichloro-ethane T=-20 - -10°C; 6 h; 2: 4-nitro-aniline With barium carbonate in 1,2-dichloro-ethane T=20°C; 12 h;

1: 6,7-O,O-demethylene-6,7-O,O-dimethylpodophyllotoxin With trimethylsilyl iodide in 1,2-dichloro-ethane T=-20 - -10°C; 6 h; 2: 4-amino-benzoic acid ethyl ester With barium carbonate in 1,2-dichloro-ethane T=20°C; 12 h;

1: 6,7-O,O-demethylene-6,7-O,O-dimethylpodophyllotoxin With trimethylsilyl iodide in 1,2-dichloro-ethane T=-20 - -10°C; 6 h; 2: 4-fluoroaniline With barium carbonate in 1,2-dichloro-ethane T=20°C; 12 h;

1: 6,7-O,O-demethylene-6,7-O,O-dimethylpodophyllotoxin With trimethylsilyl iodide in 1,2-dichloro-ethane T=-20 - -10°C; 6 h; 2: 4-fluoroaniline With barium carbonate in 1,2-dichloro-ethane T=20°C; 12 h;