Inhibition of gibberellin 3β-hydroxylase by novel acylcyclohexanedione derivatives
作者:Robert G.S. Brown、Li Yan、Michael H. Beale、Peter Hedden
DOI:10.1016/s0031-9422(97)00575-x
日期:1998.3
at the active site of dioxygenases involved in the later stages of the biosynthesis of the gibberellin (GA) plant hormones. A number of 2-acyl-5-carboxycyclohexanediones and related compounds were synthesized and compared with pyridine dicarboxylic acids and hydroxybenzoic acids as inhibitors of a GA 3β-hydroxylase from Cucurbita maxima endosperm. The most effective inhibitors of this enzyme possessed
摘要 2-酰基-5-羧基环己烷-1,3-二酮是植物生长延缓剂,据信通过与天然共底物 2-酮戊二酸竞争参与植物生长后期的双加氧酶的活性位点而发挥作用。赤霉素 (GA) 植物激素的生物合成。合成了许多 2-酰基-5-羧基环己二酮和相关化合物,并与作为来自葫芦科植物胚乳的 GA 3β-羟化酶抑制剂的吡啶二羧酸和羟基苯甲酸进行了比较。这种酶最有效的抑制剂具有 1,3-二氧-2-酰基环己烷-5-羧酸结构。2-酰基的性质对体外酶抑制效力的影响相对较小。相关的氯代化合物被证明是这种 GA 羟化酶的潜在亲和标记。