Herein we report a concise total synthesis of farylhydrazones A and B, naturally occurring phenylhydrazones recently isolated from cultures of the Cordyceps-colonizing fungus Isaria farinosa, completed in six and five steps respectively starting from 2-nitrobenzoic acid. The synthesis is completely scalable, and highly convergent making it adaptable for the preparation of analogues and investigation into the biological activity of these unique natural products. (C) 2012 Elsevier Ltd. All rights reserved.
Herein we report a concise total synthesis of farylhydrazones A and B, naturally occurring phenylhydrazones recently isolated from cultures of the Cordyceps-colonizing fungus Isaria farinosa, completed in six and five steps respectively starting from 2-nitrobenzoic acid. The synthesis is completely scalable, and highly convergent making it adaptable for the preparation of analogues and investigation into the biological activity of these unique natural products. (C) 2012 Elsevier Ltd. All rights reserved.