The present invention relates to pharmaceutically active ornithine compounds, particularly to pharmaceutically acceptable ammonium salts of N
&dgr;
-acyl derivatives of N
&agr;
(4-amino-4-deoxypteroyl)-L-omithine compounds; and methods of treatment and pharmaceutical compositions that utilize or comprise one or more of such ammonium salts. The ammonium salts provided by the invention exhibit superior chemical stability than corresponding acidic N
&dgr;
-acyl derivatives of N
&dgr;
-acyl derivatives of N
&agr;
(4-amino-4-deoxypteroyl)-L-ornithine compounds.
本发明涉及药用活性
鸟氨酸化合物,特别是药用可接受的N
&dgr;
-酰基衍
生物的
铵盐,以及利用或包含这类
铵盐的治疗方法和药物组合物。本发明提供的
铵盐比相应的N
&dgr;
-酰基衍
生物表现出更优越的
化学稳定性,后者是N
&agr;
(4-
氨基-4-脱氧叶酸)-
L-鸟氨酸化合物的酸性N
&dgr;
-酰基衍
生物。