Abstract
Methodology for preparation of the C8-C16 dienylamine segment of the streptogramin antibiotics is based on a diastereoselective nitrile oxide-olefin cycloaddition to a (triene)iron complex. The Fe(CO)3 adjunct also serves as a protecting group for the subsequent reductive hydrolysis of the isoxazoline ring.
Keywords: streptogramin antibiotics, (diene)iron complexes, cyclocondensation