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A convenient entry to the toxicophoric furo[2,3-b] benzofuran fragment present in aflatoxins

Authors
Journal
Tetrahedron Letters
0040-4039
Publisher
Elsevier
Publication Date
Volume
33
Issue
42
Identifiers
DOI: 10.1016/s0040-4039(00)60980-2
Keywords
  • Aflatoxins
  • Furo[2
  • 3-B]Benzofuran
  • Synthesis.

Abstract

Abstract Analysis of the 1H and 13C NMR spectra of the labeled hemiacetal [3a,8a- 13C 2] 1 showed that this compound exists in solution in equilibrium with the benzopyran derivative 2. This equilibrium was exploited for an alternative preparation of the furo[2,3-b]benzofuran fragment present in aflatoxins.

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