Dihydroxyacetone Phosphate Aldolase Catalyzed Synthesis of Structurally Diverse Polyhydroxylated Pyrrolidine Derivatives and Evaluation of their Glycosidase Inhibitory Properties
作者:Jordi Calveras、Meritxell Egido-Gabás、Livia Gómez、Josefina Casas、Teodor Parella、Jesús Joglar、Jordi Bujons、Pere Clapés
DOI:10.1002/chem.200900838
日期:2009.7.27
The polyhydroxylated pyrrolidines generated were tested as inhibitors against seven glycosidases. Among them, good inhibitors of α‐L‐fucosidase (IC50=1–20 μM), moderate of α‐L‐rhamnosidase (IC50=7–150 μM), and weak of α‐D‐mannosidase (IC50=80–400 μM) were identified. The apparent inhibition constant values (Ki) were calculated for the most relevant inhibitors and computational docking studies were
据报道,通过DHAP醛缩酶的催化,醛醇将磷酸二羟基丙酮磷酸酯(DHAP)加成到C-α-取代的N -Cbz-2-氨基醛衍生物上而生成的吡咯烷型亚氨基糖的化学酶法合成。来自大肠杆菌的L-藻糖-1-磷酸醛缩酶(FucA)和L-鼠李糖-1磷酸醛缩酶(RhuA)用作生物催化剂以在亚氨基糖上产生构型多样性。FucA催化剂可很好地耐受C-α处的烷基线性取代(即40-70%转化为醛醇加合物),而除二甲基和苄基取代(20%)外,未观察到具有C-α-烷基支链取代的产物。 。RhuA是用途最广泛的生物催化剂:C-α-烷基直链基团转化为羟醛加成物的转化率最高(60-99%),而C-α-烷基支链基团的转化率中等至良好(50-80%),二甲基和苄基取代基(20%)除外。FucA是最具立体选择性的生物催化剂(90%至100%的抗(3 R,4 R)加合物)。RhuA对(S)-N具有高度立体选择性-Cbz -2-氨基醛(90-100%顺式(即,3