FromD-Glucose to Biologically PotentL-Hexose Derivatives: Synthesis of ?-L-Iduronidase Fluorogenic Detector and the Disaccharide Moieties of Bleomycin A2 and Heparan Sulfate
作者:Jinq-Chyi Lee、Shu-Wen Chang、Chih-Cheng Liao、Fa-Chen Chi、Chien-Sheng Chen、Yuh-Sheng Wen、Cheng-Chung Wang、Suvarn S. Kulkarni、Ramachandra Puranik、Yi-Hung Liu、Shang-Cheng Hung
DOI:10.1002/chem.200305096
日期:2004.1.23
A novel and convenient route for the synthesis of biologically potent and rare L-hexose derivatives from D-glucose is described. Conversion of diacetone-alpha-D-glucose (14) into 1,2:3,5-di-O-isopropylidene-beta-L-idofuranose (19) was efficiently carried out in two steps. Orthogonal isopropylidene rearrangement of compound 19 led to 1,2:5,6-di-O-isopropylidene-beta-L-idofuranose (27), which underwent
描述了一种从D-葡萄糖合成生物有效且稀有的L-己糖衍生物的新颖便捷的途径。通过两个步骤有效地将双丙酮-α-D-葡萄糖(14)转化为1,2:3,5-二-O-异亚丙基-β-L-异呋喃糖(19)。化合物19的正交异亚丙基重排导致1,2:5,6-二-O-异亚丙基-β-L-idofuranose(27),其在C3位置进行区域选择性差向异构化,从而得到L-talo-和3-官能化的L-氨基呋喃糖基衍生物。化合物19在酸性条件下的水解以优异的收率提供了1,6-脱水β-L-吡喃葡萄糖(35),成功地将其转化为相应的L-allo,L-altro,L-gulo和L-ido衍生物通过区域选择性苄基化,苯甲酰化,三氟甲磺酸酯化和亲核取代是关键步骤。