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Abstract:
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[Rh (CO]2Cl]2 has been shown to catalyze sequential , mechanistically - distinct transformations in one pot . Tandem allylic alkylation /cycloisomerization sequences have been developed to access valuable , complex structures from relatively simple substrates .
A methodology for the enantioselective conjugate addition of 2 -heteroaryl nucleophiles to a variety of Michael acceptors has been developed . This method was used successfully in an ongoing approach to the synthesis of cortistatin A . 10 linear steps have been completed towards the synthesis of cortistatin A , including a highly regioselective propargylation to install a quaternary carbon and a diastereoselective intramolecular Diels -Alder reaction . |