the rhizosphere as well as in planta. However, its biological activity is yet to be evaluated, due to its relative chemical instability and its low natural abundance. Herein, we describe the gram‐scale synthesis of heliolactone and its derivatives by using Stille cross‐coupling as the key bond‐forming reaction, and we disclose some of their biological activities (soil stability, binding ability to strigolactone
硬皮内酯是植物激素,可影响植物生长和发育的各个方面,并可能在现代农业中应用。最近,已从向日葵的根分泌物中分离出作为非规范类型的strigolactone的
硫内酯,它可能参与根际和植物中的信号传导。然而,由于其相对的
化学不稳定性和低的自然丰度,其
生物学活性尚待评估。本文中,我们以Stille交叉偶合为主要的键形成反应,描述了巯基内酯及其衍
生物的克级合成,并揭示了它们的一些
生物学活性(土壤稳定性,与
草酸内酯受体的结合能力,玉米萌发,向日葵发芽,与其他规范和非规范的strigolactones相比,Orobanche cumana萌发和叶片衰老)。