Brevifolincarboxylic acid is extracted from Polygonum capitatum[1], has inhibitory effect on the aryl hydrocarbon receptor (AhR)[2]. Brevifolincarboxylic acid is an α-glucosidase inhibitor with an IC50 of 323.46 μM[3]. IC50: 323.46 μM (α-glucosidase) (Brevifolincarboxylic acid)[3]
[1]. Chen X, et al. Simultaneous isolation and purification of gallic acid and brevifolincarboxylic acid from Polygonum capitatum by high-speed counter-current chromatography. Zhongguo Zhong Yao Za Zhi. 2010 Aug;35(15):1957-60. [2]. Amakura Y, et al. Screening of the inhibitory effect of vegetable constituents on the aryl hydrocarbon receptor-mediated activity induced by 2,3,7,8-tetrachlorodibenzo-p-dioxin. Biol Pharm Bull. 2003 Dec; 26(12):1754-60. [3]. Liu M, et al. Separation of α-glucosidase inhibitors from Potentilla kleiniana Wight et Arn using solvent and flow-rate gradient high-speed counter-current chromatography target-guided by ultrafiltration HPLC-MS screening. Phytochem Anal. 2019 May 6.