... Volume: Page ... All normal organic solvents were purchased from China National Medicines Group and were distilled before utilization according to literature procedures.(42) Terbium ... 3.26 (m, 2H, H 5 ), 3.80 (q, 6H, H 2 ), 4.22 (m, 8H, H 7 ), 4.55 (s, 1H, H 6 ), 6.72 (t ...