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. Author manuscript; available in PMC: 2012 Jan 1.
Published in final edited form as: Bioorg Med Chem. 2010 Oct 31;19(1):21–29. doi: 10.1016/j.bmc.2010.10.053

Figure 2. Chemical structures of four representative bioactive compounds isolated from natural plant extracts are shown.

Figure 2

Triptolide: a diterpene isolated from Tripterygium wilfordii, Curcumin: a polyphenol isolated from Curcuma longa, epigallocatechin-3-gallate (EGCG): a flavonoid from Camellia sinensis, and acetyl-11-keto-beta-boswellic acid (AKBA): an organic acid from Boswellia serrata. These natural compounds possess anti-inflammatory activity that can suppress autoimmune arthritis.