New potent fluorescent analogues of strigolactones: synthesis and biological activity in parasitic weed germination and fungal branching

In this work we report the synthesis of new fluorescent analogues of strigolactones, their spectroscopic properties and the evaluation of their biological activity both on seeds of Orobanche aegyptiaca and on the AM fungus Gigaspora margarita. The synthesis has been accomplished according to two different synthetic plans and allows the introduction of various substituents on the A and C rings of the framework, thus enabling access to bioactive molecules with different spectroscopic properties.