Disclosed are D-xylopyranoside series compounds represented by the following general formula:
in which R 1 represents
wherein X represents a sulfur atom, Y represents a hydrogen, a lithium, a sodium, a potassium, a magnesium, a calcium or an aluminum atom; and p represents a valency of an atom represented by Y; -S-R 2 (R 2 represents a straight-chain alkyl group having from 9 to 25 carbon atoms or a branched alkyl group having from 4 to 25 carbon atoms, a straight-chain or a branched alkenyl group having from 3 to 25 carbon atoms, or a straight-chain or a branched alkynyl group having from 3 to 25 carbon atoms). In form of therapeutical compositions the compounds are effective against various diseases, including those caused by lipid deposition on the walls of blood vessels and cancer.