Several compounds [(+/-)-3a, (+/-)-3b, (+/-)-10, (+/-)-11 and (+/-)-12] with the structures related to that (3) proposed for alectrol, the germination stimulant, were synthesized. The structure (+/-)-3a was solved by X-ray crystallographic analysis. Comparison of the H-1 NMR data of the synthetic compounds with those reported for alectrol disproved the correctness of the proposed structure 3. (C) 1998 Elsevier Science Ltd. All rights reserved.
Synthesis of the Germination Stimulants (±)-Orobanchol and (±)-Strigol via an Allylic Rearrangement
作者:Anat Reizelman、Binne Zwanenburg
DOI:10.1055/s-2000-8231
日期:——
(+)-Orobanchol and (+)-strigol are naturally occurring germination stimulants for the seeds of parasitic weeds Striga and Orobanche. This paper describes an efficient synthesis of (±)-orobanchol and (±)-strigol via allylic rearrangement of lactones (±)-12 and (±)-14, respectively.