A fluorescent naphthofuran was synthesised from an oxobenzopyran by alkaline ring contraction and coupled with various l-amino acids at their N-terminus or at side-chain functional groups, in order to evaluate its applicability as a fluorescent label for biomolecules and in peptide synthesis. Fluorescence data were collected for all derivatives, which were found to be moderately fluorescent and having moderate to good fluorescence quantum yields.

中文翻译：

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萘并[2,1- b ]呋喃作为新的荧光标记：合成和光谱表征

为了评估其作为生物分子的荧光标记和在肽合成中的适用性，由氧代苯并吡喃通过碱环收缩并在其N末端或侧链官能团上与各种l-氨基酸偶联，合成了一种荧光萘呋喃。收集所有衍生物的荧光数据，发现它们是中等荧光的并且具有中等至良好的荧光量子产率。