A New Dinorxanthane and Chromone from the Root of Tithonia diversifolia

• KUO Yueh-Hsiung

  Department of Chemistry, National Taiwan University National Research Institute of Chinese Medicine

• LIN Ben-Yan

  Department of Chemistry, National Taiwan University

Abstract

Diversifolide [4,15-dinor-3-hydroxy-1(5)-xanthen-12,8-olide], a novel dinorxanthane sesquiterpene, and a new chromone, 6-acetyl-7-hydroxy-2,3-dimethylchromone, together with four known compounds, 2-deacetyl-11β, 13-dihydroxyxanthinin, 2-acetyl-2,2-dimethylchromene, 6-acetyl-7-hydroxy-2,2-dimethylchromene, and 6-acetyl-7-methoxy-2,2-dimethylchromene were isolated from the root of Tithonia diversifolia. Their structures were spectroscopically determined by 2D-NMR experiments, including heteronuclear multiple bond correlation and nuclear Overhauser enhancement spectroscopy.

Journal

• Chem. Pharm. Bull.

  Chem. Pharm. Bull. 47 (3), 428-429, 1999-03-15

  The Pharmaceutical Society of Japan

Keywords

• Tithonia diversifolia
• dinorxanthane
• chromone
• diversifolide
• 6-acetyl-7-hydroxy-2,3-dimethylchromone

Details

• CRID: 1572543027329280128
• NII Article ID: 110003617232
• NII Book ID: AA00602100
• ISSN: 00092363
• Text Lang: en
• Data Source:
  • CiNii Articles