SPHINGOSINE DERIVATIVES AND MEDICINAL COMPOSITION

摘要

Sphingosine derivatives capable of regulating the function of sphingolipids. The sphingosine derivatives are represented by general formula (I) wherein R<1> and R<2> are the same or different and each represents hydrogen, C1-4 alkyl, or C2-5 acyl; R<3> and R<4> are the same or different and each represents hydrogen or hydroxyl, or R<3> and R<4> in combination represent a covalent bond; and X<1> represents -(CH2)n-CO-NH-CH(R<5>)-R<6> or-(CH2)m-O-CO-CH(R<7>)-R<8>. <CHEM>