>
); 216 (5); 199 (5); 183 (16); 177 (13); 176 (96); 175 (16); 174 (100); 172 (7); 163 (5); 152 (6); 149 (24); 146 (14); 134 (17); 132 (18); 120 (17); 107 (18); 94 (27); 83 (31); 67 (11); 57 (8); 41 (10).
( 4 S * , 6 S * , 9a S * ) - 126-major R f min 1 H NMR (600 MHz, CDCl 3 ): ? = 5.90-5.84 (m, 1H, CH = vinyl ); 5.80 (dddd, J = 6.0, 7.9, 10.2, 16.9 , 1H, CH = allyl );
.20-5.16 (m, 2H, CH 2 = vinyl ); 5.05 (d, J = 11.1, 1H, CH =); 5.04-5.00 (m, 2H, CH 2 = allyl ); 3.63 (br. s, 1H , CHNCH =); 3.18-3.15 (m, 1H, CHNAll); 3.05 (td, J = 1.9, 9.2, 1H, CHNVinyl); 2.39 (br. s, 1H, CH A H B allyl ); 2.17 (dt, J = 9.0, 13.5, 1H, CH A H B allyl ); 2.07 (dm, J = 19.0, 1H, CH A H B CCH 3 ) ; 1.80-1.74 (m, 1H, CH A H B CHNCH =); 1.70 (s, 3H, CH 3 ); 1.65 -1.62 (m, 1H, CH A H B CHNCH =); 1.58-1.48 (m, 4H, CH < span align = "justify"> A H B CCH 3 , CH 2 CHNVinyl , CH A H B ); 1.42-1.34 (m, 1H, CH A H
