Nitrogen-in-the-Ring Pyranoses and Furanoses: Structural Basis of Inhibition of Mammalian Glycosidases
作者:Naoki Asano、Kengo Oseki、Haruhisa Kizu、Katsuhiko Matsui
DOI:10.1021/jm00048a006
日期:1994.10
alpha-glucosidase I inhibitor in cell culture, has been found to have no effect on processing alpha-glucosidase II, whereas 9 has been shown to be a good nonspecific inhibitor of intestinal isomaltase, processing alpha-glucosidase II, Golgi alpha-mannosidases I and II, and porcine kidney trehalase. It has been speculated that glycosidase inhibitors have structures which resemble those of the respective glycosyl cations
通过化学合成,微生物转化和从植物中分离制得了七个环上带有氮原子的吡喃糖酶和三个呋喃糖,以研究差向异构化,脱氧和构象对哺乳动物糖苷酶抑制和特异性的作用。这七个吡喃糖酶是1,法戈明(1,2-dideoxynojirimycin,5)的1-deoxynojirimycin(1),D-manno(2),D-allo(3)和D-galacto(4)异构体,以及D-allo(6)和D-半乳糖(7)的5异构体,而三个呋喃糖酶是2,5-dideoxy-2,5-imino-D-甘露醇(8),1,4-dideoxy-1,4 -亚氨基-D-阿拉伯糖醇(9)和1,4-二脱氧-1,4-亚氨基-D-核糖醇(10)。1的2-脱氧和/或3-表位增强了大鼠肠道乳糖酶和牛肝细胞溶质β-半乳糖苷酶的效力。尤其是化合物6对两种酶均显示出有效的抑制活性,而化合物8(β-D-果糖呋喃糖的模拟物)也是两种β-半乳糖苷酶的有效抑制剂。已