Ugaxanthone

1,3,5,6-Tetrahydroxy-4-prenylxanthone

1,3,5,6-Tetrahydroxy-4-(3-methyl-2-butenyl)-9H-xanthen-9-one

1,3,5,6-Tetrahydroxy-4-(3-methyl-2-buten-1-yl)-9H-xanthen-9-one