Flavonoids

7,8-Dihydroxyflavone is a potent and selective TrkB agonist that mimics the physiological actions of Brain-derived neurotrophic factor (BDNF). Displays therapeutic efficacy toward various neurological diseases.

Hydroxysafflor yellow A (Safflomin A) is a natural product of flavonoids isolated from safflower. Hydroxysafflor yellow A can inhibit cell proliferation and promote apoptosis through the autophagy pathway. Hydroxysafflor yellow A has anti-inflammatory, antioxidant and antitumor effects. Hydroxysafflor yellow A can be used in the study of cardiovascular disease.

Liquiritin, a flavonoid isolated from Glycyrrhiza uralensis, is a potent and competitive AKR1C1 inhibitor with IC₅₀s of 0.62 μM, 0.61 μM, and 3.72μM for AKR1C1, AKR1C2 and AKR1C3, respectively. Liquiritin efficiently inhibits progesterone metabolism mediated by AKR1C1 in vivo. Liquiritin acts as an antioxidant and has neuroprotective, anti-cancer and anti-inflammatory activity.

Glabridin is a natural isoflavan from Glycyrrhiza glabra L., binds to and activates PPARγ, with an EC₅₀ of 6115 nM. Glabridin exhibits antioxidant, anti-bacterial, anti-nephritic, anti-diabetic, anti-fungal, antitumor, anti-inflammatory, antiosteoporotic, cardiovascular protective, neuroprotective and radical scavenging activities.

Oroxylin A is an active flavonoid compound with strong anti-cancer effects. Oroxylin A inhibits the IL-6/STAT3 pathway and NF-κB signaling, inhibits cell proliferation and induces apoptosis. Oroxylin A inhibits colitis-related carcinogenesis.

Kuromanin chloride (Chrysontemin) is derived from mulberry leaves and has the effect of increasing blood sugar concentration and maintaining lipid metabolism balance to reduce obesity. Kuromanin chloride can inhibit CD38 enzymatic activities.

Acacetin (5,7-Dihydroxy-4'-methoxyflavone) is an orally active flavonoid derived from Dendranthema morifolium. Acacetin docks in the ATP binding pocket of PI3Kγ. Acacetin causes cell cycle arrest and induces apoptosis and autophagy in cancer cells. Acacetin has potent anti-cancer and anti-inflammatory activity and has the potential for pain-related diseases research.

Amentoflavone (Didemethyl-ginkgetin) is a potent and orally active GABA(A) negative modulator. Amentoflavone also shows anti-inflammatory, antioxidative, anti-viral, anti-tumor, anti-radiation, anti-fungal, antibacterial activity. Amentoflavone induces apoptosis and cell cycle arrest at sub-G1 phase.

Licochalcone A (LCA), a chalconoid, presents obvious anti-cancer effects, displays broad-spectrum inhibition against UDP-glucuronosyltransferases (UGTs). Licochalcone A (LCA) exhibits strong inhibitory effects against UGT1A1, 1A3, 1A4, 1A6, 1A7, 1A9, and 2B7 (both IC₅₀ and K_i values lower than 5 μM) .

Chrysin is one of the most well known estrogen blockers.

Biochanin A is a naturally occurring fatty acid amide hydrolase (FAAH) inhibitor, which inhibits FAAH with IC₅₀s of 1.8, 1.4 and 2.4 μM for mouse, rat, and human FAAH, respectively.

Phlorizin (Floridzin) is an orally active non-selective sodium-glucose cotransporter (SGLT) inhibitor, with an IC₅₀ of 0.04 μM and a K_i of 39 nM against hSGLT2, and an IC₅₀ of 0.17 μM and a K_i of 0.31 μM against hSGLT1. Phlorizin promotes GLUT4 translocation, inhibits gluconeogenesis and promotes glycogen synthesis by activating the PI3K/Akt/mTOR pathway. Phlorizin reduces DNA damage and apoptosis (apoptosis) by inhibiting the NF-κB inflammatory pathway. Phlorizin induces apoptosis via activating the Caspase pathway by antagonizing the JAK/STAT3 and PCK pathways. Phlorizin also exhibits antibacterial, anti-inflammatory and neuroprotective activities.

Scutellarein is a natural flavonoid compound with anti-inflammatory effects.

Procyanidin B2 is a natural flavonoid, with anti-cancer, antioxidant activities.

Tangeretin (Tangeritin), a flavonoid from citrus fruit peels, has been proven to play an important role in anti-inflammatory responses and neuroprotective effects in several disease models, and is a Notch-1 inhibitor.

Eriodictyol ((±)-Huazhongilexone; Dihydroluteolin) is an orally active TRPV1 receptor antagonist (IC₅₀=44-47 nM, rTRPV1) with antioxidant and anti-inflammatory activities. Eriodictyol effectively inhibits lipid peroxidation and the release of proinflammatory cytokines by specifically antagonizing the TRPV1 receptor and activating the Nrf2 signaling pathway. Eriodictyol reduces the levels of ICAM-1, VEGF, eNOS and TNF-α in the retina and maintains the integrity of the blood-retinal barrier. Eriodictyol alleviates oxidative stress-induced apoptosis and hyperalgesia, enhances the activity and cytotoxicity of immune cells (such as B lymphocytes, NK cells and macrophages), and increases the levels of antioxidant enzymes simultaneously. Eriodictyol can be used in the research of diabetic retinopathy, acute lung injury and various pain-related diseases.

Quercitrin (Quercetin 3-rhamnoside) is a bioflavonoid compound with potential anti-inflammation, antioxidative and neuroprotective effect. Quercitrin induces apoptosis of colon cancer cells. Quercitrin can be used for the research of cardiovascular and neurological disease research.

Cynaroside (Luteolin 7-glucoside) is a flavonoid compound that exhibits anti-oxidative capabilities. Cynaroside is also a potent influenza RNA-dependent RNA polymerase inhibitor with an IC₅₀ of 32 nM. Cynaroside also is a promising inhibitor for H₂O₂-induced apoptosis, has cytoprotection against oxidative stress-induced cardiovascular diseases. Cynaroside also has antibacterial, antifungal and anticancer activities, antioxidant and anti-inflammatory activities.

Tectorigenin is a plant isoflavonoid originally isolated from the dried flower of Pueraria lobate Benth.

Diosmin is a flavonoid found in a variety of citrus fruits and also an agonist of the aryl hydrocarbon receptor (AhR).