Synthesis of Active Strigolactone Analogues Based on Eudesmane- and Guaiane-Type Sesquiterpene Lactones
作者:Jesús G. Zorrilla、Antonio Cala、Carlos Rial、Francisco J. R. Mejías、José M. G. Molinillo、Rosa M. Varela、Francisco A. Macías
DOI:10.1021/acs.jafc.0c02361
日期:2020.9.9
that are exuded by plants and stimulate parasitic weed germination. Their use in herbicides is limited since they are produced in small quantities, but the synthesis of bioactive analogues provides an alternative source. In this work, eleven analogues have been synthesized. Among them, nine compounds belong to a novel family named eudesmanestrigolactones. The procedure is short (3–6 steps), the starting
角内酯是植物分泌的天然产物,可刺激杂草萌发。它们在除草剂中的使用受到限制,因为它们的产量小,但生物活性类似物的合成提供了另一种来源。在这项工作中,已经合成了十一种类似物。其中有9种化合物属于一个名为eudesmanestrigolactones的新家族。该过程很短(3–6个步骤),起始原料的分离度为数克,全球单产最高可达8%,这大大提高了单产。在生物测定中,这些化合物发芽了高比例的百里香(Phelipanche ramosa),茄子(Orobanche cumana)和茄子(Orobanche crenata)。种子,即使是纳克剂量(100 nM)。生物活性是立体化学依赖性的,并且根据烯醇醚的存在和几何形状,丁烯内酯的取向以及环A的不饱和度进行了讨论。所报道的化合物提供了一组易于获得的化感物质,具有作为预防性除草剂的潜在应用。