唾液酸以各种形式存在于生物体中，是连接在细胞表面糖脂和糖蛋白末端的一个九碳糖，具有广泛的生物学活性。Ｋｏｃｈｅｔｋｏｖ［１］和Ｋｕｂｏ［２］等从海胆卵中分离得到Ｎ－羟乙酰基唾液酸的８－硫酸酯衍生物，引起人们对唾液酸硫酸酯衍生物研究的兴趣。最近Ｔａｎａ... Sialic acid, which is present in various forms in organisms, is a nine-carbon sugar linked to the cell surface glycolipids and glycoproteins and has a wide range of biological activities. Kochtkov [1] and Kubo [2] isolated 8-sulfate derivatives of N-glycoyl sialic acid from sea urchin eggs, which has attracted much interest in the research of sialyl sulfate derivatives. Recently Tana ...