6-Demethoxytangeretin is a citrus flavonoid isolated from Citrus depressa. 6-Demethoxytangeretin exerts anti-inflammatory activity and anti-allergic activity, suppresses production and gene expression of interleukin-6 in human mast cell-1 via anaplastic lymphoma kinase (ALK) and mitogen-activated protein kinase (MAPK) pathways[1]. 6-Demethoxytangeretin facilitates the CRE-mediated transcription associated with learning and memory in cultured hippocampal neurons[2].
[1]. Kim YM, et al. A citrus flavonoid, 6-demethoxytangeretin, suppresses production and gene expression of interleukin-6 in human mast cell-1 via anaplastic lymphoma kinase and mitogen-activated protein kinase pathways. Biol Pharm Bull. 2014;37(5):871-6. Epub 2014 Feb 5. [2]. Kawahata I, et al. Potent activity of nobiletin-rich Citrus reticulata peel extract to facilitate cAMP/PKA/ERK/CREB signaling associated with learning and memory in cultured hippocampal neurons: identification of the substances responsible for the pharmacological action. J Neural Transm (Vienna). 2013 Oct;120(10):1397-409.