Synthesis 2017; 49(04): 755-762
DOI: 10.1055/s-0036-1588326
paper
© Georg Thieme Verlag Stuttgart · New York

Preparation of cis-Fused Tetrahydropyranyl Lactones via Palladium-Catalysed Cyclocarbonylation of Enediols

Daniela Cintulová
a   Department of Organic Chemistry, Slovak University of Technology, Radlinského 9, SK-812 37 Bratislava, Slovakia
,
Monika Slahúčková
a   Department of Organic Chemistry, Slovak University of Technology, Radlinského 9, SK-812 37 Bratislava, Slovakia
,
Juraj Paštrnák
a   Department of Organic Chemistry, Slovak University of Technology, Radlinského 9, SK-812 37 Bratislava, Slovakia
,
Naďa Prónayová
b   Department of NMR Spectroscopy, Slovak University of Technology, Radlinského 9, SK-812 37 Bratislava, Slovakia   eMail: peter.szolcsanyi@stuba.sk
,
Peter Szolcsányi*
a   Department of Organic Chemistry, Slovak University of Technology, Radlinského 9, SK-812 37 Bratislava, Slovakia
› Institutsangaben
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Publikationsverlauf

Received: 02. August 2016

Accepted after revision: 13. September 2016

Publikationsdatum:
14. Oktober 2016 (online)


Dedicated to the memory of Kristína Csatayová

Abstract

The stereoselective palladium-catalysed cyclocarbonylation of hex-5-ene-1,4-diols affords cis-fused bicyclic lactones only. Ring-opening with N,O-dimethylhydroxylamine hydrochloride gives the corresponding Weinreb amides, and their subsequent recyclisation provides advanced synthons for the prospective synthesis of decarestrictine L. The relative configurations of all the prepared tetrahydropyrans are determined by NOESY. The attempted transformations of lactones into methyl ketones leads to an unexpected furan, the formation of which is discussed.

Supporting Information