All articles of this category The first total synthesis of the spiroketal ionophore antibiotic CP-61,405 1 has been achieved employing π-allyltricarbonyliron complexes in the preparation of lactone intermediates for coupling of 2-phenylsulphonylpyrans with iodides to give the spiroketal portion of 1 . Further reactions utilized 2-lithio-1-{[(ß-trimethylsilyl)ethoxy]methyl)pyrrole for the introduction of the pyrrolylcarbonyl group and tetrapropylammonium perruthenate for the oxidation of various alcohols.
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Kotecha et al. (1992) studied this question.
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