Petasalbine synthesis

Synthesis of Evodone Synthesis of Ligularone and Petasalbine Synthesis of Paniculide-A Synthesis of Gnididione Synthesis of Norsecurinine Synthetic Approach to Geigerin Synthesis of Stemoamide Thiofurans and Amidofurans... 

A very neat method for the synthesis of furanoeremophilanes has been devised which incorporates a so-called bis-heteroannulation process.318 This is achieved by an intramolecular Diels-Alder reaction between an oxazole and an acetylenic grouping and is nicely demonstrated by the synthesis of ligularone (711) and petasalbine (712) (Scheme 67).319 A number of straightforward syntheses of... 

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