A drug targeting motif for glycosidase inhibitors: an iminosugar–boronate shows unexpectedly selective β-galactosidase inhibition
作者:Leland L. Johnson、Todd A. Houston
DOI:10.1016/s0040-4039(02)02196-2
日期:2002.12
Boronic acids were tethered to iminosugars in compounds such as 8 and 13 in order to increase their affinity for cell surfaces where glycoprotein processing enzymes are operative. Surprisingly, this modification diminished α-mannosidase inhibition while increasing β-galactosidase inhibitory activity (8: Ki=2.0×10−4 M versus E. coli β-galactosidase). The presence of a boronate in 8 and 13 has a profound
为了增加它们对糖蛋白加工酶起作用的细胞表面的亲和力,将硼酸拴在化合物8和13中的亚氨基糖上。令人惊讶地,该修饰减少了α-甘露糖苷酶的抑制,同时增加了β-半乳糖苷酶的抑制活性(相对于大肠杆菌β-半乳糖苷酶为8:K i= 2.0×10 -4 M )。硼酸盐在8和13中的存在对该抑制的特异性产生深远的影响。