xanthinosin

Noun

 * 1)  The sesquiterpenoid xanthanolide (3~{a}~{R},7~{S},8~{a}~{S})-7-methyl-3-methylidene-6-(3-oxobutyl)-4,7,8,8~{a}-tetrahydro-3~{a}~{H}-cyclohepta[b]furan-2-one present in  leaves