... (C-13); 43,7 (C-4); 41,3 (C-7); 40,7 (C-1); 39,7 (C-14); 39,7 (C -1 0) ; 37,8 (C-3); 33,1 (C-12); 28,9 (CH3-I8); 21,8 (C-6); 19,1 (C-2); 18,4 (C-11); 15,6 (CH 3- 20). Isofraxidin (2): EI-MS: mIz ... J=8,2 Hz, H-5); 6,59 (IH, dd, J=15,8; 7,7 Hz, H-8) 3,79 (3H, s, OCH3). 4-methyl-24-ethylcholest-8(14)-en-3p-ol (4): EI-MS: mIz 428 [M]" (C30H52O), 413 [M-CH3], 395 [M-CH3 - H2O], ... CH 3-2 O); 0,81 (IH, dt, J=13,0; 4,0 Hz, H^-l) "C-NMR (CDCI3, 125 MHz) 5 (ppm) 184,5 (C-19); 155,9 (C-16); 103 ,0 (C-17); 57,1 (C-5); 55,1 (C-9); 49,0 (C-15); 44,2 (C-8); 43.9 (C-13);...