Efficient and General Preparation of Pyranostilbenes: First Total Synthesis of Artocarbene and Pawhuskin B

[摘要]：An efficient and general synthesis providing pyranostilbenes in moderate yields has been developed. It consists of the reaction of pinosylvin with the appropriate alpha,beta-unsaturated aldehyde catalyzed by ethylenediamine diacetate. As an application of this methodology, biologically active natural products artocarbene and pawhuskin B were synthesized by a convergent sequence from commercially available aldehydes.

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