作者:Günter Haufe、Annegret Burchardt
DOI:10.1055/s-2002-23540
日期:——
Racemic 2-fluoro-2-(hexadecyloxymethyl)-3-methoxypropan-1-ol (15a) and its octadecyl homologue 15b were synthesized from ethyl 2-(hexadecyloxymethyl)acrylate (8a) and its homologue 8b, respectively, in five steps (20% or 19% overall yields) using a bromofluorination as the key step. The new compound 15b was transformed into 2′-(trimethylammonium)ethyl-2-methoxymethyl-3-(octadecyloxy)-1-ylphosphate (7b), a fluorinated analogue of anticancer active ether lipids. Enzyme-catalyzed deracemization of the fluorohydrins 15a and 15b using several lipases gave the corresponding enantiomers with low enantiomeric excess in all cases.
通过使用溴氟化作为关键步骤,分别从乙基2-(十六烷氧基甲基)丙烯酸酯(8a)及其同系物8b合成了消旋2-氟-2-(十六烷氧基甲基)-3-甲氧基丙醇(15a)及其十八烷基同系物15b,经过五个步骤(总产率为20%或19%)。新型化合物15b被转化为2′-(三甲基铵)乙基-2-甲氧基甲基-3-(十八烷氧基)-1-基磷酸盐(7b),这是一种含氟的抗癌活性醚脂类似物。利用多种脂肪酶催化的酶促消旋化反应,氟醇15a和15b均得到了相应的对映体,但所有情况下对映体过量率均较低。