Synthesis ofC(2)-Substitutedmanno-Configured Tetrahydroimidazopyridines and Their Evaluation as Inhibitors of Snailβ-Mannosidase
作者:Miroslav Terinek、Andrea Vasella
DOI:10.1002/hlca.200390293
日期:2003.10
It was shown that retaining β-glucosidases and galactosidases of families 1–3 feature a strong interaction between C(2)OH of the substrate and the catalytic nucleophile. An analogous interaction can hardly take place for retaining β-mannosidases. A structureactivity comparison between the inhibition of the β-glucosidase from Caldocellum saccharolyticum (family 1) and β-glucosidase from sweet almonds
结果表明,保留1-3族的β-葡萄糖苷酶和半乳糖苷酶在底物的C(2)OH与催化亲核试剂之间具有强烈的相互作用。几乎不可能发生类似的相互作用来保留β-甘露糖苷酶。的抑制之间的构效比较β葡糖苷酶从Caldocellum糖热厌氧杆菌(家族1)和β由葡萄糖苷酶从甜杏仁葡糖-咪唑1 - 6,和蜗牛的抑制β甘露糖苷酶由相应的甘露-咪唑8 - 13没有显示出任何显着差异,表明这些糖苷酶的作用机理也没有显着差异。对于此比较,我们合成并测试了甘露-咪唑9 - 13,28,29,32,35,40,41,43,46,47,和50。其中,烯烃29是已知的最强的蜗牛β-甘露糖苷酶抑制剂(K i = 6 nM,非竞争性)。苯胺35是最强的竞争性抑制剂(K i = 8 nM)。