The structure of orobanchol, a new seedgerminationstimulant for clover broomrape (Orobanche minor), was proposed as 5a (tentative absolute configuration) on the basis of GC-MS comparison of the natural product with several synthetic compounds [(±)-4a–(±)-4h, (±)-5a and (±)-5b]. All of the synthetic compounds showed significant seedgermination activities for Orobanche minor and witchweed (Striga asiatica)
Synthesis of All Eight Stereoisomers of the Germination Stimulant Strigol
作者:Anat Reizelman、Marc Scheren、Gérard H. L. Nefkens、Binne Zwanenburg
DOI:10.1055/s-2000-8230
日期:——
(+)-Strigol is a naturally occurring germination stimulant for the seeds of the parasitic weeds Striga and Orobanche. This paper describes the synthesis of all eight stereoisomers of strigol. The absolute configuration of these stereoisomers has been deduced from their CD-spectra.