abstract |
THE PRESENT INVENTION RELATES TO A PROCESS FOR PREPARING 4''-DEMETHYLEPIPODOPHYLLOTOXIN GLUCOSIDE 4''-PHOSPHATE, WHICH COMPRRISE REACTING A PROTECTED 4''-DEMETHYLPODOPHYLLOTOXIN WITH A PROTECTED GLUCOPYRANOSE IN THE PRESENCE OF A LEWIS ACID, FOLLOWED BY REPROTECTION. |