Synthesis and Evaluation of Eight- and Four-Membered Iminosugar Analogues as Inhibitors of Testicular Ceramide-Specific Glucosyltransferase, Testicular β-Glucosidase 2, and Other Glycosidases
作者:Jae Chul Lee、Subhashree Francis、Dinah Dutta、Vijayalaxmi Gupta、Yan Yang、Jin-Yi Zhu、Joseph S. Tash、Ernst Schönbrunn、Gunda I. Georg
DOI:10.1021/jo202054g
日期:2012.4.6
contraceptive in mice, were prepared and tested. A chiral pool approach was used for the synthesis of the target compounds. Key steps for the synthesis of the eight-membered analogues involve ring-closing metathesis and Sharpless asymmetric dihydroxylation and for the four-membered analogues Sharpless epoxidation, epoxide ring-opening (azide), and Mitsunobu reaction to form the four-membered ring. (3S,4R
制备并测试了N-丁基脱氧野尻霉素 (NB-DNJ) 的八元和四元类似物,这是一种小鼠可逆雄性避孕药。使用手性池方法合成目标化合物。八元类似物合成的关键步骤包括闭环复分解和 Sharpless 不对称二羟基化,四元类似物 Sharpless 环氧化、环氧化物开环(叠氮化物)和 Mitsunobu 反应形成四元环。(3 S ,4 R ,5 S ,6 R ,7 R )-1-Nonylazocane-3,4,5,6,7-pentaol ( 6) 对大鼠来源的神经酰胺特异性葡萄糖基转移酶具有中等活性,其他八元类似物中的四个对大鼠来源的 β-葡萄糖苷酶 2 的活性较弱。 在四元类似物中,((2 R ,3S,4 S )-3-羟基-1-壬基氮杂环丁烷-2,4-二基)二甲醇 ( 25 ) 对小鼠来源的神经酰胺特异性葡糖基转移酶具有选择性抑制活性,并且对大鼠来源的酶的抑制作用约为 NB-DNJ 的一半。((2