• Title/Summary/Keyword: natural products

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Piperoctadecalindine, a New Piperidine Alkaloid from Piper retrofractum Fruits

  • Ahn Jong Woong;Lee Chong Ock;Kim Eun Joo;Zee Ok Pyo;Kim Hyung Jin
    • Bulletin of the Korean Chemical Society
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    • v.13 no.4
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    • pp.388-391
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    • 1992
  • A chemical investigation of the fruits of Piper retrofractum (Piperaceae) has led to the isolation and characterization of a novel piperidine alkaloid, piperoctadecalidine together with three known alkaloids piperine, pipernonaline and guineensine. The structure of the new compound was detemined to be (2E,4E,14Z)-N-(2,4,14-Octadecatrienoyl) piperidine by spectral and synthetic methods.

Sterols and Triterpenoids from Codonopsis lanceolata

  • Yang, Han-Suk;Choi, Sung-Sook;Han, Byung-Hoon;Kang, Sam-Sik;Woo, Won-Sick
    • YAKHAK HOEJI
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    • v.19 no.3
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    • pp.209-213
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    • 1975
  • The roots of Codonopsis lanceolata contained ${\alpha}$-spinasterol. ${\delta}^7$-stigmastenol, oleanolic acid, echinocystic acid, and an unidentified triterpene acid, mp $249{\circ}$.

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Isoflavonoids of Belamcanda chinensis (II)

  • Eu, Gang-Hae;Woo, Won-Sick;Chung, Ha-Sook;Woo, Eun-Hee
    • Korean Journal of Pharmacognosy
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    • v.22 no.1
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    • pp.13-17
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    • 1991
  • Dimethyltectorigenin, irisflorentin, muningin and iristectorigenins A and B were isolated from the rhizomes of Belamcanda chinensis.

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