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Construction of furo[3,4-c]pyran skeleton starting from the Baylis–Hillman adducts via the ring-closing metathesis (RCM) reaction of exo-methylene tetrahydrofuran
Construction of furo[3,4-c]pyran ring skeleton was achieved starting from the Baylis–Hillman adducts. The synthesis was carried out by the successive introduction of propargyl alcohol, radical cyclization, reduction, allylation, and finally ring-closing metathesis reaction.