New Chain-Extended Analogues of Salacinol and Blintol and Their Glycosidase Inhibitory Activities. Mapping the Active-Site Requirements of Human Maltase Glucoamylase
作者:Ravindranath Nasi、Lyann Sim、David R. Rose、B. Mario Pinto
DOI:10.1021/jo061944v
日期:2007.1.1
acid yielded the target compounds. In these analogues, an extended polyhydroxylated aliphatic side chain has been incorporated while maintaining the stereochemistry of C-2‘ and C-3‘ of salacinol or blintol. These compounds were designed to probe the premise that they would bind with higher affinity to glucosidases than salacinol because the extra hydroxyl groups in the acyclic chain would make favorable
1,4-脱水-4-硫代- (或4-硒代)的新扩链的锍和硒鎓盐的合成- d -arabinitol,天然存在的糖苷酶抑制剂的Salacinol类似物,进行说明。在4,6-的至少受阻碳原子亲核攻击ø -亚苄基-2,5-二- ø - p -methoxybenzyl- d -mannitol -1,3-环由2,3,5-三硫酸盐ø -对甲氧基苄基-1,4-脱水4-硫代-(或4-硒代)-d-阿拉伯糖醇分别得到the和硫酸硒。随后用三氟乙酸脱保护,得到目标化合物。在这些类似物中,已引入延伸的多羟基化脂族侧链,同时保持了柳氮素或双环丁醇的C-2'和C-3'的立体化学。设计这些化合物的目的是探究它们与葡糖苷酶结合的比葡糖醇具有更高的亲和力的前提,因为无环链中多余的羟基会在活性部位形成良好的极性接触。两个目标化合物抑制重组人麦芽糖酶葡糖淀粉酶,在小肠中参与葡萄糖低聚糖的分解的关键肠酶之一,ķ我值在低微摩尔范