was monitored in vitro. The impact of the type and configuration of the δ‐substituents was probed and it was found that amino‐substituted surrogates yield the corresponding lactams. A carboxamide analogue was transformed into a glutarimide unit, which can be found in many natural products. Our findings illuminate the biosynthesis of glutarimide‐bearing polyketides and also demonstrate the utility of this
聚酮化合物通常是由酰基
硫酯的头尾缩合产生高度官能化的线性链产生的。然而,植物毒素根霉菌素的
生物合成涉及一种聚酮化合物合酶(PKS)模块,该模块通过将
丙二酸增量剂迈克尔加成至α,β-不饱和中间单元而引入δ-内酯链分支。为了评估分支模块的范围内,聚酮化合物模拟物的合成和通过重构PKS其
生物转化从模块根霉共生体伯克霍尔德rhizoxinica在体外进行监测。探究了δ取代基的类型和构型的影响,发现
氨基取代的替代物产生相应的内酰胺。羧酰胺类似物被转化为戊二
酰亚胺单元,可以在许多
天然产物中找到。我们的发现阐明了带有戊二
酰亚胺的聚酮化合物的
生物合成,也证明了该分支模块在合成
生物学中的实用性。