Ethanol → Methyldigoxin

Beteiligte Stoffe

Reaktionsschritte

4.75 l. of eluate with 40% ethanol contain 3.91 g. of solid material. The mixture contains all non-reacted digoxin, α-metildigoxin and β-metildigoxin and can again be separated on the column. The following fraction of 5 l. contains 4.73 g. of slightly contaminated β-metildigoxin. If the ethanol content is increased, diethers and higher ethers of digoxin are eluted. The main fraction with metildigoxin is reprecipitated from methanol/water, boiled up with chloroform and stirred up with acetone.

Herkunft & Nachweise