5-Hydroxyacronine

Alkaloid A(Atalantia)

5-Hydroxynoracronycine

11-Hydroxy-O-demethylacronine

Alkaloid A from Atalantia ceylanica

3,12-Dihydro-6,11-dihydroxy-3,3,12-trimethyl-7H-pyrano[2,3-c]acridin-7-one