Amplectol: A Novel Acetylenic Thiophene Derivative from Blumea amplectens var. arenaria.
The aerial parts of BLUMEA AMPLECTENS var. ARENARIA afforded taraxasteryl acetate, dihydrosterculic acid, the sesquiterpene ferutinin, and the acetylenic thiophene diol, 3,4-dihydroxy-8-[5'-methylthiophen-2'-yl]-1, 5-octadien-7-yne, named as amplectol. Thestructures were elucidated by spectroscopic methods. A biogenetic pathway for the formation of amplectol in the plant is also suggested.
Pathak
V P
VP
Institute for Organic Chemistry, Technical University of Berlin, D-1000 Berlin 12, W. Germany.
Jakupovic
J
J
Jain
S
S
Bhakuni
D S
DS