Förfarande för framställning av substituerande propan-fosfinsyraföreningar, användbara som läkemedel

摘要

Compounds of the formula I wherein R denotes an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic or araliphatic radical having 2 or more carbon atoms, and wherein one of the groups R<1>, R<2> and R<3> represents hydrogen or an aliphatic, cycloaliphatic, araliphatic or aromatic radical, another one of R<1>, R<2> and R<3> is hydrogen or, in the case of R<1> and R<2>, is hydroxy, and the remaining one of R<1>, R<2> and R<3> is hydrogen, and their salts have GABAB-antagonistic properties and can be used as GABAB-antagonists. They are obtained when in a compound of formula II in which R, R<1>, R<2> and R<3> have their previous significances, Z represents -NH2 and R<4> denotes a hydroxy-protective group R<5> or, when R<1> and R<3> denote hydrogen and R<2> denotes hydrogen or alkyl, denotes an alkali metal or ammonium ion R<6>, or Z represents a protected or latent amino group Z<0> and R<4> denotes hydrogen or a hydroxy-protective group R<5>, any group R<5> or R<6> is replaced by hydrogen, and/or any group Z<0> is converted into -NH2.