Synthesis of (7<i>S</i>,15<i>S</i>)- and (7<i>R</i>,15<i>S</i>)-Dolatrienoic Acid<sup>1a</sup>
作者:Jonathan J. Duffield、George R. Pettit
DOI:10.1021/np000502q
日期:2001.4.1
stereospecific synthesis of (7S,15S)- and (7R,15S)-dolatrienoic acids (2) was achieved using an approach consisting of 16 linear steps. The C-11--C-16 unit was prepared in seven steps from ethyl (S)-lactate and coupled using a trans-selective Wittig--Schlosser reaction to the C-7--C-10 fragment. Chirality at the C-7 position was introduced using an Evan's-type chiral auxiliary in a cobalt-mediated Reformatsky