AIDS-030820 AIDS030820 Artigenin congener Dibenzylbutyrolactone lignanolide Furo[3',4':6,7]naphtho[2,3-d]-1,3-dioxol-6(5aH)-one, 5,8,8a,9-tetrahydro-10-hydroxy-5-(4-hydroxy-3,5-dimethoxyphenyl)-, [5R-(5.alpha.,5a.beta.,8a.alpha.)]-