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A new salicyl lactone was detected from the unidentified Oulenzia sp. and its chemical structure was elucidated as 7-hydroxyphthalide (7-hydroxy-3H-isobenzofuran-1-one), based on its GC/MS and GC/FT-IR data and SiO2 column behavior. The compound was synthesized by NaBH4 reduction of 3-hydroxyphthalic anhydride. The GC/MS and GC/FT-IR spectra of the natural compound were consistent with those of the synthetic product. Although the compound is known as a medical material, this is the first example of its presence in nature.

Citation

N Shimizu, Y Kuwahara. 7-Hydroxyphthalide: a new natural salicylaldehyde analog from Oulenzia sp. (Astigmata: Winterschmitiidae). Bioscience, biotechnology, and biochemistry. 2001 Apr;65(4):990-2

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PMID: 11388489

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