Abstract
The major constituent of the ether extract of the New Zealand liverwort Plagiochila circinalis afforded five new fatty acid esters of sterol or triterpenoid. Their structures were unequivocally determined, while the purification was not completed. They were shown to be cycloart-24-en-3β-yl α-linolenate, stigmasteryl γ-linolenate, cycloart-24-en-3β-yl arachidonate, 4α, 14α-dimethyl-8, 24(28)-ergostadien-3β-yl arachidonate and 4α, 14α-dimethyl-8, 24(28)-ergostadien-3β-yl eicosapentaenoate. Cycloart-24-en-3β-yl eicosapentaenoate which has been found in the Malagasy liverwort Mastigophora diclados, was also isolated from the title species.
