Abstract
The title natural products (1 and 2, respectively) have been synthesized by Au(I)-catalyzed intramolecular hydroarylation (IMHA) of the relevant aryl propiolate esters (e.g., 13), which were themselves formed by reaction of the corresponding phenols with either 3-(trimethylsilyl)propiolic acid or propiolic acid and N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride or dicyclohexylcarbodiimide. (±)-Purpurasol (3) was readily derived from fraxetin (2) by established procedures.
Original language | English |
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Pages (from-to) | 9876-9882 |
Number of pages | 7 |
Journal | Journal of Organic Chemistry |
Volume | 78 |
Issue number | 19 |
DOIs | |
Publication status | Published - 4 Oct 2013 |