Stereoselective one-pot synthesis of polypropionates

Guo-Ming Ho, Medel Manuel L. Zulueta and Shang-Cheng Hung ()
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Guo-Ming Ho: Academia Sinica
Medel Manuel L. Zulueta: Academia Sinica
Shang-Cheng Hung: Academia Sinica

Nature Communications, 2017, vol. 8, issue 1, 1-7

Abstract: Abstract Polypropionates—motifs with alternating methyl and hydroxy groups—are important segments of many natural products possessing high bioactivity and therapeutic value. Synthetic access to these structures remains an area of intensive interest, focusing on the establishment of the contiguous stereocentres and a desire for operational simplicity. Here we report an efficient strategy for the stereoselective assembly of polypropionates with three or four stereocentres through a three-step relay process that include Diels–Alder reaction, silylenol ether hydrolysis and Baeyer–Villiger oxidation. The stereochemistry and functionality of the resulting polypropionates depend on the substitution pattern of the diene and dienophile substrates of the Diels–Alder cycloaddition. More importantly, the relay sequence is effectively performed in one pot, and the product could potentially undergo the same sequence for further elaboration. Finally, the C1–C9 segment of the macrolide etnangien is constructed with four of the six stereogenic centres established using the relay sequence.

Date: 2017
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DOI: 10.1038/s41467-017-00787-y

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