{HEAD ~ The present invention} is directed to {TAIL ~ a method} for demethylating 14 hydroxy substituted alkaloid derivatives, in particular of 14 hydroxy 17 methyl 4,5 epoxymorphinane 6 on derivatives 
is directed to
{ HEAD ~ The present invention } is directed to { TAIL ~ a method } for demethylating 14 hydroxy substituted alkaloid derivatives , in particular of 14 hydroxy 17 methyl 4,5 epoxymorphinane 6 on derivatives
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