(-)-Picropodopyllone 477-48-5 5a,6,8a,9-Tetrahydro-9-(3,4,5-trimethoxyphenyl)furo(3',4':6,7)naphtho(2,3-d)-1,3-dioxole-5,8-dione (5aR-(5aalpha,8aalpha,9aalpha))- Furo(3',4':6,7)naphtho(2,3-d)-1,3-dioxole-5,8-dione, 5a,6,8a,9-tetrahydro-9-(3,4,5-trimethoxyphenyl)-, (5aR-(5aalpha,8aalpha,9aalpha))- Picropodopyllotoxon Picropodopyllotoxone