Reckitt & Colman Products Limited

Ryszard J Kobylecki

John W Lewis

Ian G Guest

Gordon W Kirby

Novel derivatives of morphine having the general formula: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are certain specified values, and their pharmaceutically acceptable salts. The compounds exhibit activity in the central nervous system and may be presented in the form of pharmaceutical compositions comprising a compound of formula (I), or a pharmaceutically acceptable salt thereof, in association with a pharmaceutically acceptable diluent or carrier.

14-Amino derivatives of morphine, methods of making them and analgesic

Novel derivatives of morphine having the general formula: ##STR1## wherein R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are certain specified values, and their pharmaceutically acceptable salts. The compounds exhibit activity in the central nervous system and may be presented in the form of pharmaceutical compositions comprising a compound of formula (I), or a pharmaceutically acceptable salt thereof, in association with a pharmaceutically acceptable diluent or carrier.

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Patrington, United Kingdom

Ryszard J Kobylecki