Four New Clerodane Diterpenoids from Callicarpa pentandra

Leaf extracts of Callicarpa pentandra provided four new clerodane-type diterpenoids (1−4), of which 1, 2, and 4 have ring-A-contracted structures. Their structures and stereochemistry were established by spectral data interpretation, and for 3 also by single-crystal X-ray diffraction.

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Bibliographic Details
Published in:Journal of natural products (Washington, D.C.) D.C.), 2000-08, Vol.63 (8), p.1062-1065
Main Authors: Xu, Jin, Harrison, Leslie J, Vittal, Jagadese J, Xu, Yuan-Jian, Goh, Swee-Hock
Format: Article
Language:English
Subjects:
Biological and medical sciences
Chromatography, Liquid
Chromatography, Thin Layer
Crystallography, X-Ray
Diterpenes - chemistry
Diterpenes - isolation & purification
Gas Chromatography-Mass Spectrometry
General pharmacology
Lamiaceae - chemistry
Magnetic Resonance Spectroscopy
Malaysia
Medical sciences
Medicine, Traditional
Optical Rotation
Pharmacognosy. Homeopathy. Health food
Pharmacology. Drug treatments
Phytotherapy
Plant Leaves - chemistry
Plants, Medicinal - chemistry
Spectrophotometry, Infrared
Spectrophotometry, Ultraviolet
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Description
Summary:Leaf extracts of Callicarpa pentandra provided four new clerodane-type diterpenoids (1−4), of which 1, 2, and 4 have ring-A-contracted structures. Their structures and stereochemistry were established by spectral data interpretation, and for 3 also by single-crystal X-ray diffraction.
ISSN:0163-3864
1520-6025
DOI:10.1021/np990584m