Andrographis paniculata 2 Andrographolide 2 Cell Line, Tumor 2 Diterpenes 2 Drug Screening Assays, Antitumor 2 Humans 2 Semisynthesis Structure-Activity Relationship 2 andrographolide 2 antineoplastic agent 2 article 2 human 2 structure activity relation 2 3,19 (2 bromobenzylidene)andrographolide 1 3,19 (2 chloro 4 fluorobenzylidene)andrographolide 1 3,19 (2 chloro 5 nitrobenzylidene)andrographolide 1 3,19 (2 chlorobenzylidene)andrographolide 1 3,19 (2 ethoxy 4 hydroxybenzylidene)andrographolide 1 3,19 (2 fluorobenzylidene)andrographolide 1 3,19 (2 hydroxy 3 methoxybenzylidene)andrographolide 1 3,19 (2 hydroxy 5 nitrobenzylidene)andrographolide 1 3,19 (2 methylbenzylidene)andrographolide 1 3,19 (2 nitrobenzylidene)andrographolide 1 3,19 (2,5 dimethoxybenzylidene)andrographolide 1 3,19 (3 bromobenzylidene)andrographolide 1 3,19 (3 chloro 4 fluorobenzylidene)andrographolide 1 3,19 (3 chlorobenzylidene)andrographolide 1 3,19 (3 fluorobenzylidene)andrographolide 1 3,19 (3 hydroxy 4 methoxybenzylidene)andrographolide 1 3,19 (3 methylbenzylidene)andrographolide 1