.alpha.-Peltalin A .beta.-Peltatin .beta.-Peltatin A 518-29-6 Furo[3',4':6,7]naphtho[2,3-d]-1,3-dioxol-6(5aH)-one, 5,8,8a,9-tetrahydro-10-hydroxy-5-(3,4,5-trimethoxyphenyl)-, [5R-(5.alpha.,5a.beta.,8a.alpha.)]- NSC24819 Naphtho[2,3-d]-1,3-dioxole-6-carboxylic acid, 5,6,7,8-tetrahydro-9-hydroxy-7-(hydroxymethyl)-5-(3,4,5-trimethoxyphenyl)-, .gamma.-lactone PELTATIN B