... ( 1) 257 ( 3), 218 (10 0), 203 (3 3), 95 (3 9), 69 (5 2), 55 (6 3). Phd 'H-NMR, CDCI3, d„ ppm: Bauerenol ( 1): 5,43 (IH, br d, J = 3,7 Hz, H- 7), 3,25 (IH, m, H-3a); «-amyrin ( 2): ... [m/z, %): 468 [M]* ( 3), 218 (10 0), 203 (3 0), 95 (3 2), 69 (3 2), 55 (2 7). Phd 'H-NMR (dppm): d^ 5,20/5,14 (r, / = 3,5 Hz); 4,52 {hr, t,J~ 6Hz, H-3a); 2,06 (3H, s, Ac). Sdlieu ... EI-MS (w/z): 438 [M]"( 8), 423 [M-15]"( 5), 410 ( 6), 299 (1 1), 273 (7 7), 232 (6 1), 149 (2 0), 135 (10 0). Phd 'H-NMR (dppm): d 5,55 (IH, t, / = 3 Hz, H-1 2); 2,93...