Evaluation of the chemical quality of Sekkoku (石斛) in current Japanese commercial crude drugs: constituents of Flickingeria xantholeuca (Rchb. f.) A.D. Hawkes

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• 作者：Mei Muto ; Haruka Asahina ; Tatsufumi Yoshioka ; Kazuo Ozaki…
• 关键词：ent ; Pimarane ; type diterpene ; ent ; Kaurane ; type diterpene ; Glycoside ; Flickingeria xantholeuca ; Orchidaceae ; TLC ; LC/MS
• 刊名：Journal of Natural Medicines
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：71
• 期：1
• 页码：238-248
• 全文大小：
• 刊物主题：Pharmacology/Toxicology; Plant Sciences; Complementary & Alternative Medicine; Medicinal Chemistry; Pharmacy;
• 出版者：Springer Japan
• ISSN：1861-0293
• 卷排序：71

文摘

In our investigation, most Shihu (石斛; Japanese name, Sekkoku) in current Japanese commercial crude drugs were from Flickingeria xantholeuca (Orchidaceae). As the index compounds, three new ent-pimarane-type diterpenes, flickinxthanthosides A–C (1–3), one known analogue (7), and three new ent-kaurane-type diterpenes, flickinxanthosides D (4) and E (5) and flickinxanthol A (6) were isolated from the stem of F. xantholeuca. The structures of the new compounds were elucidated on the basis of spectroscopic analyses and chemical methods. We attempted to detect these index compounds from the MeOH extracts of other Dendrobium or Flickingeria plants using TLC and LC/MS.