Co-existence of α-glucosidase-inhibitory and liver X receptor-regulatory activities and their separation by structural development
作者:Kosuke Dodo、Atsushi Aoyama、Tomomi Noguchi-Yachide、Makoto Makishima、Hiroyuki Miyachi、Yuichi Hashimoto
DOI:10.1016/j.bmc.2008.02.078
日期:2008.4
investigate the alpha-glucosidase-inhibitory activity of typical LXR ligands and the LXR-modulating activity of typical alpha-glucosidase inhibitors. Although there were some exceptions, co-existence of LXR-regulatory and alpha-glucosidase-inhibitory activities seemed to be rather general among the examined compounds. The LXR ligands were found to be non-competitive alpha-glucosidase inhibitors, suggesting that
最初被报道为氧固醇激活的核受体的肝X受体(LXR)最近被发现将葡萄糖识别为生理配体。在此基础上,我们已经开发了基于源自沙利度胺的α-葡萄糖苷酶抑制剂的新型LXR拮抗剂。在这里,为了阐明α-葡萄糖苷酶抑制与LXR调节之间的关系,我们研究了典型的LXR配体的α-葡萄糖苷酶抑制活性和典型的α-葡萄糖苷酶抑制剂的LXR调节活性。尽管有一些例外,但在所研究的化合物中,LXR调节和α-葡萄糖苷酶抑制活性的共存似乎相当普遍。LXR配体被发现是非竞争性的α-葡萄糖苷酶抑制剂,这表明可能有可能分开这两种活性。为了检验这一想法,我们集中研究了蓖麻毒素C(一种自然存在的LXR配体),在这里我们发现它也是有效的α-葡萄糖苷酶抑制剂。riccardin C的结构发展提供了缺乏α-葡萄糖苷酶抑制活性的新型LXR拮抗剂19c和19f,以及LXRalpha选择性拮抗剂22。