The chemistry of fungi. Part LXVII. Synthesis of di-O-methylcitromycinone and related pyrano[3,2-c][1]benzopyran-4,5-diones
Abstract
Novel, general routes to 2-methylpyrano[3,2-c][1]benzopyran-4,5-diones are reported. Di-O-methylcitromycinone, a major degradation product of the fungal metabolite, citromycetin, has been synthesised.