Xylomexicanins K-N: limonoids from the leaves and twigs of Xylocarpus granatum

Shao Jing Li, Li Kang Zhao, Jin Jun Chen, Chun Hua Zhou, Xin Li Huang, Yi Bing Wu, Françoise Sauriol, Yu Cheng Gu, Hiromasa Kiyota

Research output: Contribution to journalArticlepeer-review

Abstract

Six new compounds, xylomexicanins K-N (1–4), granasteroid (5) and 5-methoxy-2-pentylbenzofuran-7-ol (6), along with nine known compounds were isolated from the leaves and twigs of Xylocarpus granatum. Among them, 1 was a biogenetic precursor of 1,8,9-phragmalin limonoid, and 4 represent the first example of degraded A-ring limonoid. The structures of them were elucidated on the basis of one- and two-dimensional NMR spectroscopic data (including 1H, 13C-NMR, DEPT, 1H-1H COSY, HSQC, HMBC, and NOESY) and confirmed by high-resolution mass spectrometry.

Original languageEnglish
JournalNatural Product Research
DOIs
Publication statusAccepted/In press - 2021

Keywords

  • Xylocarpus granatum
  • limonoid
  • mexicanolide
  • structure elucidation

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Plant Science
  • Organic Chemistry

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