Figure 1From: Changes in the contents of four active diterpenoids at different growth stages in Andrographis paniculata (Burm.f.) Nees (Chuanxinlian)Structures of four main active diterpenoids in Andrographis paniculata. A. andrographolide (AP1); B. 14-deoxy-11,12-didehydroandrographolide (AP3); C. neoandrographolide (AP4); and D. 14-deoxyandrographolide (AP6).Back to article page