Synthesis, Biological Activity, and Hologram Quantitative Structure−Activity Relationships of Novel Allatostatin Analogues
作者:Zhen-peng Kai、Juan Huang、Yong Xie、Stephen S. Tobe、Yun Ling、Li Zhang、Yi-chen Zhao、Xin-ling Yang
DOI:10.1021/jf902156k
日期:2010.3.10
Cockroach-type allatostatins (FGLamides) (ASTs) can inhibit the production of juvenile hormone in vitro, and they therefore are regarded as possible insect growth regulator (IGR) candidates for pest control. However, several shortcomings, such as the absence of in vivo effects, rapid degradation, and high production costs, preclude their practical use in pest management. To discover new IGRs, 25 novel
蟑螂型阿托伐他汀(FGLamides)(ASTs)可以在体外抑制幼体激素的产生,因此,它们被认为是可能用于害虫控制的昆虫生长调节剂(IGR)候选物。然而,一些缺点,例如缺乏体内作用,快速降解和高生产成本,使得它们无法在有害生物管理中实际使用。为了发现新的IGR,在先前结果的基础上,设计并合成了25种五肽(Y / FXFGLa)的新型类似物,并用不同的芳族酸,脂肪酸和二元羧酸作为Y / FX区域的替代物。确定了它们在体外的生物活性,结果显示八个类似物(K14,K15,K17,K18,K19,K23,K24和K25)比先导核心区域五肽更具活性。K15和K24的IC 50值(分别为IC 50 = 1.79和5.32 nM)甚至低于天然AST,Dippu-AST 1(IC 50 = 8 nM),这表明这两个类似物的活性均高于Dippu -AST 1;特别是K15具有比大多数天然Dippu-AST更