Fluorinated carbohydrates as potential plasma membrane modifiers and inhibitors. Synthesis of 2-acetamido-2,6-dideoxy-6-fluoro-d-galactose
作者:Moheswar Sharma、Gopalan G. Potti、Onda D. Simmons、Walter Korytnyk
DOI:10.1016/0008-6215(87)80199-4
日期:1987.4
displaced by fluorine with cesium fluoride in boiling 1,2-ethanediol, and hydrolysis and subsequent N-acetylation gave the target compound. In another procedure, treatment of 2-acetamido-1,3,4-tri-O-acetyl-2-deoxy-alpha-D-galactose with N-(diethylamino)sulfur trifluoride gave 2-acetamido-1,3,4-tri-O-acetyl-2,6-dideoxy-6-fluoro-D-galactose which, on acid hydrolysis followed by N-acetylation, gave 2-acetamido-2
苄基2-乙酰
氨基-3,4-二-O-
苄基-2-
脱氧-6-O-甲磺酰基-α-D-
吡喃半
乳糖苷与
氟化铯反应生成
苄基2-乙酰
氨基-3,6-
脱水-4- O-
苄基-2-
脱氧-α-D-
吡喃半
乳糖苷代替所需的6-
氟衍
生物。
苄基2-乙酰
氨基-2-
脱氧-6-O-甲磺酰基-α-D-
吡喃半
乳糖苷的乙酰化得到相应的3,4-O-异亚丙基衍
生物。在沸腾的1,2-
乙二醇中,
氟与
氟化铯置换6-O-甲磺酰基,然后
水解,然后进行
N-乙酰化,得到目标化合物。在另一步骤中,用N-(二乙
氨基)三
氟化
硫处理2-乙酰
氨基-1,3,4-三-O-
乙酰基-2-
脱氧-α-
D-半乳糖,得到2-乙酰
氨基-1,3,4-三-O-
乙酰基-2,6-二
脱氧-6-
氟-
D-半乳糖,经酸
水解后经
N-乙酰化,得到2-乙酰
氨基-2,6-二
脱氧-6-
氟-
D-半乳糖。