Korean Journal of Pharmacognosy (생약학회지)

The Korean Society of Pharmacognosy (한국생약학회)
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Phytochemical Analysis of Ginkgo biloba Yellow Leaves

노란은행잎의 성분분석

  • Kang, Sam-Sik (Natural Products Research Institute, Seoul National University) ;
  • Koh, Young-Min (College of Natural Sciences, Seoul Women's University) ;
  • Kim, Ju-Sun (Natural Products Research Institute, Seoul National University) ;
  • Lee, Myung-Whan (College of Natural Sciences, Seoul Women's University) ;
  • Lee, Dong-Sun (College of Natural Sciences, Seoul Women's University)
  • 강삼식 (서울대학교 천연물과학연구소) ;
  • 고영민 (서울여자대학교 자연과학대학) ;
  • 김주선 (서울대학교 천연물과학연구소) ;
  • 이명환 (서울여자대학교 자연과학대학) ;
  • 이동선 (서울여자대학교 자연과학대학)
  • Published : 1995.03.30
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Abstract

6-Hydroxykynurenic acid and ginkgolide B together with flavonol glycosides and biflavonoids were isolated from the yellow leaves of Ginkgo biloba and identified by means of spectroscopic methods. The correctness of $H{\"{o}}lzl's$ ${13}^C-NMR$ assignments for 6-hydroxykynurenic acid was confirmed by HMQC and HMBC techniques. Based on our present findings, it may be considered that the yellow Ginkgo leaves may contribute to be a source of high medicinal values.

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