Chemical Constituents from Drypetes littoralis

Chemical investigation of Drypetes littoralis yielded three new tricyclic diterpenes, drypetenones A, B, and C (1--3), and one new xanthone (4). Spectral analyses and chemical correlations established the structures as 10S-12-hydroxy-11-methoxy-13-methylpodocarpa-1,5,8,11,13-pentaene-3,7-dione, (1),...

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Bibliographic Details
Published in:Journal of natural products (Washington, D.C.) D.C.), 2001-06, Vol.64 (6), p.707-709
Main Authors: LIN, Mei-Tsu, CHEN, Lih-Chun, CHEN, Chien-Kuang, CHEN LIU, Karin C. S., LEE, Shoei-Sheng
Format: Article
Language:English
Subjects:
Antineoplastic Agents, Phytogenic - chemistry
Antineoplastic Agents, Phytogenic - isolation & purification
Antineoplastic Agents, Phytogenic - pharmacology
Biological and medical sciences
Diterpenes - chemistry
Diterpenes - isolation & purification
Euphorbiaceae - chemistry
General pharmacology
Mass Spectrometry
Medical sciences
Pharmacognosy. Homeopathy. Health food
Pharmacology. Drug treatments
Plant Extracts - chemistry
Plants, Medicinal - chemistry
Spectrophotometry, Infrared
Spectrophotometry, Ultraviolet
Spectroscopy, Fourier Transform Infrared
Taiwan
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Summary:Chemical investigation of Drypetes littoralis yielded three new tricyclic diterpenes, drypetenones A, B, and C (1--3), and one new xanthone (4). Spectral analyses and chemical correlations established the structures as 10S-12-hydroxy-11-methoxy-13-methylpodocarpa-1,5,8,11,13-pentaene-3,7-dione, (1), 10S-12-hydroxy-11-methoxy-13-methylpodocarpa-5,8,11,13-tetraene-3,7-dione (2), 10S-12-hydroxy-6,11-dimethoxy-13-methylpodocarpa-1,5,8,11,13-pentaene-3,7-dione (3), and 1-hydroxy-7-hydroxymethyl-6-methoxyxanthone (4). Complete (13)C NMR assignment of boehmenan D (5) is also made.
ISSN:0163-3864
1520-6025
DOI:10.1021/np0005964