The first example of asymmetric dihydroxylation of cyclopropylidene derivatives—An enantioenriched formal total synthesis of (−)-filiformin
摘要:
The first example of asymmetric dihydroxylation (AD) of the cyclopropylidene derivatives 4a-e followed by enantiospecific 1,2-rearrangement of the resulted diols 5a-e to give the optically active cyclobutanones 7a-e was reported. The synthesis of 7e constitutes an enantioenriched formal total synthesis of (-)-filiformin (8).