| abstract |
(57) [Summary] (Modified) [Structure] Oligosaccharides composed of the same or different monosaccharides selected from glucose, galactose, mannose, etc., each having 2 to 30 sugars, which are glycoside-bonded. Hydrogen of the hydroxyl group at the 1-position of the terminal sugar of the oligosaccharide is replaced by an alkyl group which is a linear or branched alkyl group having 22 or less carbon atoms, and the remaining hydroxyl group of the sugar moiety A long-acting antiviral liquid preparation containing, as an active ingredient, a sulfated alkyl oligosaccharide having a sulfated ratio of 14.3% or more or a physiologically acceptable salt thereof. [Effect] The above antiviral agents have extremely low toxicity and can be used for a wide range of DNA regardless of the presence or absence of the viral envelope. It has antiviral activity against viruses and RNA viruses, and particularly has excellent antiviral activity against AIDS virus, and has a remarkable in vivo persistence as compared with conventional drugs. |