Sesquiterpenoid Constituents of the Liverwort Frullania brotheri STEPH.

Article abstract of DOI:10.1246/bcsj.56.1120

Two new sesquiterpene lactones, (+)-β-frullanolide and (+)-brothenolide, have been isolated from the liverwort Frullania brotheri STEPH. One of them, (+)-brothenolide, has an allergenic property. The absolute structures of these lactones have been established by spectroscopic analysis and chemical transformation.