Ellagic acid is an organic heterotetracyclic compound resulting from the formal dimerisation of gallic acid by oxidative aromatic coupling with intramolecular lactonisation of both carboxylic acid groups of the resulting biaryl. It is found in many fruits and vegetables, including raspberries, strawberries, cranberries, and pomegranates. It has a role as an EC 2.7.7.7 (DNA-directed DNA polymerase) inhibitor, a geroprotector, an antioxidant, an EC 5.99.1.2 (DNA topoisomerase) inhibitor, an EC 5. Ellagic acid is a potent and ATP-competitive CK2 inhibitor, with an IC50 of 40 nM and a Ki of 20 nM. Ellagic acid has anti-inflammatory, antiproliferative and antioxidant properties, it can prevent cognitive and LTP deficits and also prevent brain inflammation following TBI. Ellagic acid reduced the expression of NO, MDA, IL-1β, TNF-α, COX-2 and NF-κB, and induced the production of GSH and IL-10.

Emodin has neuroprotective and antidepressant activity, can up-regulate GR and BDNF levels in hippocampus; it also has significant anti-neoplastic activity against bladder cancer cells and myeloid leukemia, by suppressing tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), iNOS and COX-2 expression. Emodin has protective effects, may be related to the inhibition of CCL5 expression and subsequent cell stress/inflammatory events possibly mediated by activation of MAPK signaling pathways. Emodin anthrone is a member of the class of anthracenones that is anthracen-9(10H)-one which carries a methyl group at position 6 and hydroxy groups at positions 1, 3 and 8, respectively. It is an intermediate precursor in the synthesis of hypericin. It has a role as a fungal metabolite. It is an anthracenone and a member of phenols.

Kirenol possesses anti-bacteria, immunosuppression, anti-obesity, anti-oxidant, anti-inflammatory, anti-allergic, and anti-arthritic activities. Kirenol has significant potential for its discovery as a new lead compound for management of topical pain and inflammation; it can upregulate nuclear Annexin-1 which interacts with NF-κB to attenuate synovial inflammation of collagen-induced arthritis in rats. Kirenol can attenuate experimental autoimmune encephalomyelitis by inhibiting differentiation of Th1 and th17 cells and inducing apoptosis of effector T cells. Kirenol activates the BMP and Wnt/β-catenin signaling pathways.

Emodin has neuroprotective and antidepressant activity, can up-regulate GR and BDNF levels in hippocampus; it also has significant anti-neoplastic activity against bladder cancer cells and myeloid leukemia, by suppressing tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), iNOS and COX-2 expression. Emodin has protective effects, may be related to the inhibition of CCL5 expression and subsequent cell stress/inflammatory events possibly mediated by activation of MAPK signaling pathways.

Emodin has neuroprotective and antidepressant activity, can up-regulate GR and BDNF levels in hippocampus; it also has significant anti-neoplastic activity against bladder cancer cells and myeloid leukemia, by suppressing tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), iNOS and COX-2 expression. Emodin has protective effects, may be related to the inhibition of CCL5 expression and subsequent cell stress/inflammatory events possibly mediated by activation of MAPK signaling pathways. Emodin is a trihydroxyanthraquinone that is 9,10-anthraquinone which is substituted by hydroxy groups at positions 1, 3, and 8 and by a methyl group at position 6. It is present in the roots and barks of numerous plants (particularly rhubarb and buckthorn), moulds, and lichens. It is an active ingredient of various Chinese herbs. It has a role as an antineoplastic agent, a tyrosine kinase inhibitor, a laxative and a plant metabolite. It is functionally related to an emodin anthrone.