“…PMR spectrum (300 MHz, DMSO-d 6 , δ, ppm, J/Hz): 5.25 (1H, s, H-1″), 6.18 (1H, s, H-6), 6.38 (1H, s, H-8), 6.88 (1H, d, J = 8.4, H-5′), 7.25 (1H, d, J = 8.4, H-6′), 7.30 (1H, s, H-2′), 12.66 (1H, s, 5-OH), 10.85 (1H, s, 7-OH), 9.64 (1H, s, 3′-OH), 9.35 (1H, s, 4′-OH). 13 …”