| 摘要 |
The present invention provides a compound represented by the formula (I) or a salt thereof: wherein R<SUP>1 </SUP>represents a hydrogen atom, a C<SUB>1-10 </SUB>alkyl group optionally having a substituent, or a protecting group of N; R<SUP>2 </SUP>represents a C<SUB>1-10 </SUB>alkyl group optionally having a substituent or a C<SUB>2-10 </SUB>alkenyl group optionally having a substituent; R<SUP>3 </SUP>and R<SUP>4 </SUP>independently represent a hydrogen atom or a protecting group of hydroxyl group; X represents -N(R<SUP>5</SUP>)R<SUP>6 </SUP>or a residue of amino acid or of an amino group of a peptide wherein R<SUP>5 </SUP>and R<SUP>6 </SUP>independently represent a hydrogen atom, a C<SUB>1-10 </SUB>alkyl group optionally having a substituent, or a C<SUB>3-12 </SUB>cycloalkyl group optionally having a substituent; and Y represents a hydrogen atom, -CH<SUB>2</SUB>NH<SUB>2</SUB>, -CONH<SUB>2</SUB>, or -COOH. The compound of the present invention is useful as a specific inhibitor of sugar chain related enzymes such as glycosyltransferase and glycosidase, and is useful as, for example, a medicine for treating or preventing diseases associated with sugar chain related enzymes.
|
