Two Novel Cytotoxic Benzofuran Derivatives from Brazilian Propolis

Two novel benzofuran derivatives, propolis-benzofurans A (1) and B (2), were isolated from the MeOH extract of Brazilian propolis, together with two known isoprenylated compounds (E)-3-[2,3-dihydro-2-(1-methylethenyl)-7-prenyl-5-benzofuranyl]-2-propenoic acid and (E)-3-{4-hydroxy-3-[(E)-4-(2,3-dihyd...

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Bibliographic Details
Published in:Journal of natural products (Washington, D.C.) D.C.), 2000-09, Vol.63 (9), p.1277-1279
Main Authors: Banskota, Arjun H, Tezuka, Yasuhiro, Midorikawa, Kiyoshi, Matsushige, Katsumichi, Kadota, Shigetoshi
Format: Article
Language:English
Subjects:
Animals
Antineoplastic Agents - chemistry
Antineoplastic Agents - isolation & purification
Benzofurans - chemistry
Benzofurans - isolation & purification
Biological and medical sciences
Drug Screening Assays, Antitumor
General pharmacology
Humans
Medical sciences
Mice
Molecular Structure
Pharmacognosy. Homeopathy. Health food
Pharmacology. Drug treatments
Propolis - chemistry
Spectrum Analysis
Tumor Cells, Cultured
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Summary:Two novel benzofuran derivatives, propolis-benzofurans A (1) and B (2), were isolated from the MeOH extract of Brazilian propolis, together with two known isoprenylated compounds (E)-3-[2,3-dihydro-2-(1-methylethenyl)-7-prenyl-5-benzofuranyl]-2-propenoic acid and (E)-3-{4-hydroxy-3-[(E)-4-(2,3-dihydrocinnamoyloxy)-3-methyl-2-butenyl]-5-prenylphenyl}-2-propenoic acid. The structures of these compounds were elucidated on the basis of spectral analysis. Both the new compounds exhibited mild cytotoxicity toward highly liver-metastatic murine colon 26-L5 carcinoma and human HT-1080 fibrosarcoma cells.
ISSN:0163-3864
1520-6025
DOI:10.1021/np000143z