The synthesis of a series of deoxygenated 2,3-difluoro-N-acteylneuraminic acid derivatives as potential sialidase inhibitors
作者:Stefan Hader、Andrew G. Watts
DOI:10.1016/j.carres.2013.03.026
日期:2013.6
syntheses of a series of 4-, 7-, 8- and 9-deoxygenated 2,3-difluoro-N-acetylneuraminic acid derivatives as potential mechanism-based inhibitors of sialidases. The syntheses commenced utilising an enzyme-catalysed aldolase reaction between N-acetyl mannosamine and β-fluoropyruvic acid to give 3-fluoro-N-acetyl-neuraminic acid. This common intermediate was then used in selective protection protocols and Barton-McCombie
在这里,我们描述了一系列的4-,7-,8-和9-脱氧的2,3-二氟-N-乙酰神经氨酸衍生物作为唾液酸酶的潜在机理抑制剂的成功合成。利用N-乙酰甘露糖胺和β-氟丙酮酸之间的酶催化醛缩酶反应开始合成,得到3-氟-N-乙酰神经氨酸。然后将这种常见的中间体用于选择性保护方案和Barton-McCombie脱氧反应中,以生成一整套脱氧的3-氟-N-乙酰神经氨酸衍生物。最后,利用(二乙基氨基)三氟化硫(DAST)的氟化步骤成功地生成了每种目标二氟化物。