Synthesis of the isocoumarin portion of the rubromycins
作者:Stephen P Waters、Marisa C Kozlowski
DOI:10.1016/s0040-4039(01)00524-x
日期:2001.5
A synthesis of the isocoumarin found in the rubromycin class of natural products is reported. The isocoumarin ring system is formed via Heck coupling of a pyruvate synthon with a terephthalic acid derivative followed by an intramolecular acid-catalyzed cyclization. The requisite terephthalic acid precursor is generated by carboxylation of catechol and then desymmetrization of the aromatic ring by halogenation