Preparation of optically pure 4-(hydroxymethyl)-2-pentadecyl-1,3-dioxolanes and their corresponding phosphodiester ether lipid derivatives
作者:Sonyuan Lin、Richard I Duclos、Alexandros Makriyannis
DOI:10.1016/s0009-3084(01)00185-2
日期:2001.11
[cis-(2R,4S)-2a, trans-(2S,4S)-2b, cis-(2S,4R)-2a', and trans-(2R,4R)-2b'] of a 2,4-disubstituted-1,3-dioxolane into optically pure forms (100% de, 100% ee). The syntheses of phosphodiester head group derivatives from each of these four conformationally constrained diastereomeric dioxolanes gave phospholipids which are monocyclic ether lipid analogs. First, the series of four [[(2-pentadecyl-1,3-dioxolan
在该合成过程中,采用了手性固定相(Chiracel OD)上的半制备HPLC分离出四种可能的非对映体[cis-(2R,4S)-2a,trans-(2S,4S)-2b,cis- 2,4-二取代-1,3-二氧戊环的(2S,4R)-2a'和反式-(2R,4R)-2b']成光学纯净的形式(100%de,100%ee)。由这四个构象受约束的非对映异构二氧戊环中的每一个的磷酸二酯头基衍生物的合成给出了作为单环醚脂质类似物的磷脂。首先,合成四个[[((2-(十八烷基-1,3-二氧杂戊-4-基)-甲基)氧基]]磷酸胆碱5系列,以提供光学纯的,构象受限的ET-16-OCH(3)类似物。四个非对映异构体[[((2-pentadecyl-1,