Synthesis of Thromboxane B<sub>2</sub> via Ketalization/Ring-Closing Metathesis
作者:Christopher C. Marvin、Alexander J. L. Clemens、Steven D. Burke
DOI:10.1021/ol7021214
日期:2007.12.1
Total synthesis of thromboxaneB2 using intermolecular ketalization followed by ring-closing metathesis is reported. Other key steps include a Sharpless asymmetric epoxidation to form an oxirane on the endo face of the bicyclic acetal, epoxide opening using lithioacetonitrile, an allylic alcohol 1,3-transposition, and Mitsunobu lactonization.