3β-Acetyl-20,25-epoxydammarane-24α-ol spectral data and interpretation

3β-Acetyl-20,25-epoxydammarane-24α-ol

 C32H54O4

 502.00

IR(cm-¹)

(film) 3492, 2949, 1714, 1451, 1378, 1250, 1143, 1042, 980

1H NMR

(250 MHz, CDCl3) δ: 4.60 (1H, dd, J = 10.5, 5.5 Hz, H-3), 3.86 (1H, t, J = 7.0 Hz, H-24), 2.18 (3H, s, CH3-32), 1.17 (3H, s, CH3-27), 1.09 (3H, m, CH3-21), 1.08 (3H, s, CH3-26), 0.92 (3H, s, CH3-18), 0.83 (6H, s, CH3-28, CH3-30), 0.81 (6H, s, CH3-19, CH3-29), 0.79 (1H, m, H-5) 13 C NMR (63 MHz, CDCl3) δ: 171.5 (C-31), 86.9 (C-20), 83.7 (C-24), 81.3 (C-3), 71.9 (C-25), 56.3 (C-5), 51.1 (C-9), 50.4 (C-14), 49.9 (C-17), 43.3 (C-13), 40.8 (C-8), 38.7 (C-1), 37.9 (C-4), 37.1 (C-10), 35.7 (C-22), 35.6 (C-7), 31.9 (C-15), 30.1 (C-29), 27.9 (C-27), 27.3 (C-12), 26.1 (C-23), 24.6 (C-16), 24.1 (C-2), 24.0 (C-21), 21.9 (C-32), 21.8 (C-11), 18.5 (C-6), 16.8 (C-19, C-30), 16.7 (C-28), 15.8 (C-18)