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

Add time:08/08/2019    Source:sciencedirect.com

Analysis of the 1H and 13C NMR spectra of the labeled hemiacetal [3a,8a-13C2]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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