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Reassignment of the structures of pestalopyrones A-D.
Li, Jing; Tan, Yu-Fen; Liu, Shao; Wu, Xiao-Qian; Wang, Jing; Xu, Kang-Ping; Tan, Gui-Shan; Zou, Zhen-Xing; Wang, Wen-Xuan.
Afiliación
  • Li J; Department of Pharmacy, Xiangya Hospital, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, PR China.
  • Tan YF; Department of Pharmacy, Xiangya Hospital, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, PR China.
  • Liu S; Department of Pharmacy, Xiangya Hospital, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, PR China.
  • Wu XQ; Xiangya School of Pharmaceutical Sciences, PR China; Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, Hunan, 410008, PR China.
  • Wang J; Xiangya School of Pharmaceutical Sciences, PR China; Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, Hunan, 410008, PR China.
  • Xu KP; Xiangya School of Pharmaceutical Sciences, PR China; Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, Hunan, 410008, PR China.
  • Tan GS; Department of Pharmacy, Xiangya Hospital, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, PR China.
  • Zou ZX; Xiangya School of Pharmaceutical Sciences, PR China; Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, Hunan, 410008, PR China.
  • Wang WX; Xiangya School of Pharmaceutical Sciences, PR China; Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, Hunan, 410008, PR China. Electronic address: wenxuanwang@tom.com.
Phytochemistry ; 200: 113205, 2022 Aug.
Article en En | MEDLINE | ID: mdl-35436477
Pestalopyrones A-D are four unusual tricyclic pyrone derivatives with flexible chiral structures, isolated from the endophytic fungus Pestalotiopsis neglecta S3. The full elucidation of their structures was a challenging task, and remained unsolved in the original article. Herein, the relative configurations of pestalopyrones A and pestalopyrones B were unambiguously assigned by detailed analyses on spectroscopic data and GIAO 13C NMR calculation method with sorted training sets (STS). The planar structures of pestalopyrones C and pestalopyrones D were revised by reinterpretation of their reported spectroscopic data, and then their relative configurations were deduced by STS GIAO 13C NMR calculation and NOE analysis. The absolute configurations of all the mentioned compounds were determined by the comparison of their experimental and calculated ECD curves.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Pironas Idioma: En Revista: Phytochemistry Año: 2022 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Pironas Idioma: En Revista: Phytochemistry Año: 2022 Tipo del documento: Article Pais de publicación: Reino Unido