Cyclomammeisin

Mammea A/AD cyclo D

4-Phenyl-5-hydroxy-6-(3-methylbutyryl)-8-(1-methyl-1-hydroxyethyl)-8,9-dihydro-2H-furo[2,3-h][1]benzopyran-2-one

8,9-Dihydro-5-hydroxy-8-(1-hydroxy-1-methylethyl)-6-(3-methyl-1-oxobutyl)-4-phenyl-2H-furo[2,3-h]-1-benzopyran-2-one