An Expeditious Synthesis of Vibsanol, a Benzofuran-Type Lignan from Viburnum awabuki
作者:Takayuki Shioiri、Atsushi Sakai、Toyohiko Aoyama
DOI:10.3987/com-99-s63
日期:——
Total synthesis of vibsanol, a benzofuran-type lignan
作者:Atsushi Sakai、Toyohiko Aoyama、Takayuki Shioiri
DOI:10.1016/s0040-4039(99)00714-5
日期:1999.5
Vibsanol (1), a benzofuran-type lignan isolated from the wood of Vibumum awabuki (Caprifoliaceae), was synthesized by the tandem cyclization of o-tert-butyldimethylsiloxydiarylalkyne with tetrabutylammonium fluoride and excess paraformaldehyde as the key step.
New benzofuran-type lignans, vibsanol (1) and 9'-O-methylvibsanol (2), along with dihydrodehydrodiconiferyl alcohol (3), have been isolated from the wood of Viburnum awabuki (Caprifoliaceae). Their structures have been elucidated mainly on the basis of spectroscopic data. The antioxidant property of new compounds has been evaluated.