quantum chemical calculations were performed on six n-derivatives of oxymorphone including n-methyl- ( oxymorphone ) , n-allyl- ( naloxone ) , n-dimethylallyl- ( nalmexone ) , n-methylcyclopropyl- ( naltrexone ) , n-methylcyclobutyl- ( nalbuphone ) , and n-phenethylnoroxymorphone using the pcilo method .
C0027358
naloxone
C0027360
naltrexone