Synthesis of (+)-Discodermolide by Catalytic Stereoselective Borylation Reactions
作者:Zhiyong Yu、Robert J. Ely、James P. Morken
DOI:10.1002/anie.201405455
日期:2014.9.1
1990 and, to this day, remains a compelling synthesis target. Not only does the compound possess fascinating biological activity, but it also presents an opportunity to test current methods for chemical synthesis and provides an inspiration for new reaction development. A new synthesis of discodermolide employs a previously undisclosed stereoselectivecatalytic diene hydroboration and also establishes
efficiency in modern organic synthesis. In particular, the high potential of biocatalysts still needs to be harvested. Based on an in-depth mechanistic investigation of a new organocatalytic protocol employing two catalysts 1,4-diazabicyclo[2.2.2]octane (DABCO); benzoic acid (BzOH)}, a sequence was established providing starting materials for enzymatic refinement (ene reductase; alcohol dehydrogenase):