1
Anna Borsodi, Zsuzsa Furst, Sandor Hosztafi, Schafferne E Varga, BuzaBeata, Tamas Friedmann, Sandor Benyhe, Maria Szucs: Pharmaceutical composition and use. Alkaloida Chemical Company, Steinberg Raskin & Davidson, May 31, 1994: US05317022 (70 worldwide citation)

A biologically active preparation for human or veterinary use for the selective blockade of opioid binding sites of the brain responsible for respiratory depression containing in a biologically active quantity the codeinone derivative of general formula (I) or its salt


2
Sandor Hosztafi, Tibor Timar, Zoltan Salamon, Ilona Fabian nee Orban, Julianna Nagy nee Vajda: Process for the preparation of D1-.beta.-aryl amino acids. Alkaloida Vegyeszeti Gyar, Karl F Ross, Herbert Dubno, March 3, 1987: US04647694 (2 worldwide citation)

The invention relates to a process for the preparation of DL-.beta.-aryl-amino acids of the general Formula ##STR1## wherein R, R.sub.1 and R.sub.2 stand for hydrogen, halogen, C.sub.1-6 alkyl, C.sub.1-6 alkoxy, nitro or C.sub.1-4 dialkylamino; whereby


3
Anna Borsodi, Zsuzsa Furst, Sandor Hosztafi, Schafferne E Varga, Beata Buzas, Tamas Friedmann, Sandor Benyhe, Maria Szucs: Apioid analgesic without respiratory depression. Alkaloida Chemical Company, Steinberg Raskin & Davidson, October 10, 1995: US05457110 (2 worldwide citation)

A biologically active preparation for human or veterinary use for the selective blockade of opioid binding sites of the brain responsible for respiratory depression containing in a biologically active quantity the codeinone derivative of general formula (I) or its salt


4
Sandor Hosztafi, Sandor Makleit, Laszlo Szilagyi, Kalmany Zsupan: Morphinane-skeletoned hydrazone derivatives. Alkaloida Vegyeszeti Gyar Rt, Schweitzer Cornman & Gross, August 3, 1993: US05232926 (1 worldwide citation)

The present invention relates to novel morphinane-skeletoned compounds of the formula (I) ##STR1## wherein Y in-NH phenyl or --NH dintro phenyl, Z is --CH.sub.2 -- CH.sub.2, R.sub.2 is hydroxyl and R.sub.3 is H or methyl, the steric isomers and the pharmaceutically acceptable salts thereof, a novel ...