11-Methoxytetrahydroyangonin

Tetrahydro-11-methoxyiangonin

(S)-6-[2-(3,4-Dimethoxyphenyl)ethyl]-5,6-dihydro-4-methoxy-2H-pyran-2-one

(6S)-5,6-Dihydro-6-[2-(3,4-dimethoxyphenyl)ethyl]-4-methoxy-2H-pyran-2-one