Amino acid derivatives having anti-tumor activity and compositions containing them.

摘要

Amino acid amides of formula (I):
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wherein R<Sup>1</Sup>-R<Sup>5</Sup> and Y represent a variety of organic groups and atoms (including where R<Sup>2</Sup>, Y and the adjacent nitrogen atom together represent a thiazolidine or pyrrolidine group) and X represents carbonyl or sulphonyl are mostly new compounds and have valuable anti-tumour and immuno-regulatory activities. They may be formulated in compositions for pharmaceutical use.