Three-dimensional structure-activity relationship study of belactosin A and its stereo- and regioisomers: development of potent proteasome inhibitors by a stereochemical diversity-oriented strategy
作者:Keisuke Yoshida、Kazuya Yamaguchi、Akira Mizuno、Yuka Unno、Akira Asai、Takayuki Sone、Hideyoshi Yokosawa、Akira Matsuda、Mitsuhiro Arisawa、Satoshi Shuto
DOI:10.1039/b900384c
日期:——
The development of potent proteasome inhibitors based on the stereochemical diversity-oriented strategy using a conformationally rigid cyclopropane structure was investigated. Thus, a series of stereo- and regioisomeric analogs of belactosin A (2), a cyclopropane amino acid (methanoamino acid)-containing tripeptidic proteasome inhibitor, were designed, in which the central cyclopropane amino acid part
研究了基于构象刚性环丙烷结构的基于立体化学多样性导向策略的有效蛋白酶体抑制剂的开发。因此,设计了一系列的Belactosin A(2)立体异构体和区域异构体,这是一种含有环丙烷氨基酸(甲氨基氨基酸)的三肽蛋白酶体抑制剂,其中中央的环丙烷氨基酸部分被相应的立体异构体或区域异构体。使用一系列立体异构体的环丙烷氨基酸等效物,具有顺/反,D / L和syn / anti我们先前开发的立体化学多样性作为关键单元,已成功合成了目标化合物。生物学评价表明,如所预期,化合物活性改取决于中心环丙烷氨基酸部分的立体化学:在反式/ L-顺式异构体7和所述顺式/ L-抗-异构体9分别超过两倍强效天然Belactosin A(反式/ L-反异构体)。此外,三肽化合物13,非天然的顺式/ L-抗异构体9的合成前体被鉴定为高效蛋白酶体抑制剂。该化合物的效力是贝洛斯托因A的20倍,甚至比众所周知的抑制剂乳腺抑肽(4)更有