Conformationally restricted analog and biotin-labeled probe based on beauveriolide III
作者:Takayuki Doi、Terushige Muraoka、Taichi Ohshiro、Daisuke Matsuda、Masahito Yoshida、Takashi Takahashi、Satoshi Ōmura、Hiroshi Tomoda
DOI:10.1016/j.bmcl.2011.10.045
日期:2012.1
inhibitory activity for cholesteryl ester synthesis similar to that by 2. These results revealed biologically important 3D spaces of the three side chains in inhibitory activity for cholesteryl ester synthesis. In addition, we accomplished the synthesis of a biotin-labeled probe 8 by copper-catalyzed (3+2) cycloaddition of a biotin-containing alkyne 16 and azido-containing beauveriolide analog 15 prepared
构象受限的恶唑啉类似物7是基于对beauveriolide III(2)及其先前报道的类似物的SAR研究而设计的。分子力学计算的构象分析表明,7个分子的三个侧链大部分与2个分子占据相同的空间。模拟7通过的肽偶联合成d含酯-cyclohexylglycine- 11和ð含-Ser二肽12,macrolactamization,和脱水闭环的6为恶唑啉环的结构。双环7表现出潜在的抑制胆固醇酯合成的活性类似于2。这些结果揭示了对胆固醇酯合成的抑制活性中三个侧链的生物学重要的3D空间。另外,我们通过由6制备的含生物素的炔烃16和含叠氮基的beauveriolide类似物15的铜催化(3 + 2)环加成反应,完成了生物素标记的探针8的合成。