“…7-methoxy catechin ( FL-3 ): Yellow powder, brown gummy solid; 1 H-NMR (600 MHz, DMSO-d, δ = ppm): 6.70 (d, 1H, J = 11.2 Hz, H-5′), 6.59 (dd, 1H, J = 10.8 & 3.2 Hz, H-6′), 6.59 (d, 1H, J = 3.2 Hz, H-2′), 5.86 (s, 1H, H-8), 5.69 (1H, s, H-6), 4.47 (d, 1H, J = 10.4 Hz, H-2), 3.71 (d, J = 6.8, 10.4 & 11.6 Hz, H-3), 3.16 (s, OCH 3 , H-11), 2.54 (dd, 1H, J = 20.8 and 6.8 Hz, H-4α), 2.50 (1H, m, H-4β); 13 C-NMR (150 MHz, DMSO-d, δ = ppm): 156.3, 156.1, 155.2, 144.8, 130.5, 118.4, 115.1, 114.4, 99.1, 95.2, 93.9, 80.8, 66.2, 48.6, 27.6; ESI-HRMS (positive): m / z 291.0729 [M − CH 2 + H] + [ 63 , 64 , 65 ].…”