| verticillane derivatives from bursera suntui and bursera kerberi. | the stems of bursera suntui afforded two new verticillane derivatives, (1s,3z,7e,11s,12s)-(+)-verticilla-3,7-dien-12,20-diol (1) and (1s,3z,7e,11s,12s)-(+)-verticilla-3,7-dien-12,20-diol 20-acetate (2), together with (1s,3e,7e,11r)-(+)-verticilla-3,7,12(18)-triene (3), (1r,3e,7e,11r,12z)-(+)-verticilla-3,7,12-triene (4), (1r,7e,11z)-(-)-verticilla-4(20),7,11-triene (5), and (1s,3e,7e,11s,12s)-(+)-verticilla-3,7-dien-12-ol (6). compounds 3 and 4 are new enantiomerically pure natural products whos ... | 2005 | 16309306 |