[Study on novel morphine antagonists in the animal experiment (author's transl)]

The morphine-antagonistic properties of 5 novel compounds, (--)N-(3-Furylmethyl)-nordesomorphine-hydrochloride-monohydrate (Wa 494-Cl), (--)N-(3-Furylmethyl)-3-hydroxy-morphinan-methansulfonate (Mr 1257 MS), (--)2-(3-Furylmethyl)-2'-hydroxy-5,9alpha-dimethyl-6,7-benzomorphan-methansulfonate (Mr 1452 MS), (+/-)-2-(3-Furylmethyl)-2'-hydroxy-5,9alpha-diethyl-6,7-benzomorphan-hydrochloride (Mr 1302 MS), (--)-N-(3-Furylmethyl)-noroxymorphon-methanesulfonate (Mr 1767 MS), have been examined with different methods on mice and cats. Their properties have been compared with those of naloxone, cyclazocine and nalorphine. The new test compounds showed a profile of action like naloxone.