Design, Synthesis, and Bioactivity of the First Nonsteroidal Mimetics of Brassinolide
作者:Denise L. Andersen、Thomas G. Back、Loeke Janzen、Karol Michalak、Richard P. Pharis、Gabriel C. Y. Sung
DOI:10.1021/jo015832+
日期:2001.10.1
Ten novel compounds, each consisting of two subunits and a linker, were designed with the aid of molecular modeling to resemble the natural steroidal phytohormone brassinolide. The mimetics were synthesized and subjected to the rice leaf lamina inclination bioassay to test for brassinosteroid activity. Most of the mimetics displayed very weak or no bioactivity, but two were strongly active when coapplied
借助于分子建模,设计了十个新颖的化合物,每个化合物都包含两个亚基和一个接头,类似于天然的甾体植物激素油菜素内酯。合成模拟物并进行稻叶薄层倾斜生物测定以测试油菜素类固醇的活性。大多数模拟物显示出非常弱的生物活性或没有生物活性,但是当与生长素吲哚-3-乙酸(IAA)共同使用时,它们具有很强的活性,后者可以协同油菜素类固醇的活性。因此,1-(4,6α,7α-三羟基-5,6,7,8-四氢萘基)-2-(6α',7α'-二羟基-5',6',7',8' -四氢萘基乙炔(4)和(E)-1,2-双[反式-(4aα,8aβ)-4-氧代-6α,7α-二羟基-4a,5,6,7,8, 8a-六氢-(3H)-萘]乙烯(11)在低至0.01 ng和0的剂量下表现出优异的活性。分别为001 ng /植物。这些化合物是第一个具有生物活性的非甾体油菜素内酯类似物。