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Labdane diterpenoids and lignans from Calocedrus macrolepis.
Xing-De Wu1, Shuang-Yan Wang, Lei Wang
1State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, PR China.
Fitoterapia
|January 29, 2013
Summary
Researchers isolated new labdane diterpenoids and lignans from Calocedrus macrolepis. These compounds were tested for their potential to inhibit the growth of various human cancer cell lines.
Area of Science:
- Natural Products Chemistry
- Phytochemistry
- Medicinal Chemistry
Background:
- Calocedrus macrolepis is a traditional medicinal plant.
- Diterpenoids and lignans are classes of natural compounds with diverse biological activities.
Purpose of the Study:
- To isolate and characterize new chemical constituents from Calocedrus macrolepis.
- To evaluate the cytotoxic potential of isolated compounds against human cancer cell lines.
Main Methods:
- Isolation of compounds using chromatographic techniques.
- Structure elucidation using 1D and 2D Nuclear Magnetic Resonance (NMR) spectroscopy.
- Cytotoxicity assays against HL-60, SMMC-7721, A-549, MCF-7, and SW480 cell lines.
Main Results:
- Three new labdane diterpenoids (calomacrins A-C) and one new lignan (calomacrol A) were identified.
- Four known labdane diterpenoids and six known lignans were also isolated.
- The cytotoxic activities of compounds 3-14 were evaluated against a panel of cancer cell lines.
Conclusions:
- Calocedrus macrolepis is a source of novel labdane diterpenoids and lignans.
- Further investigation into the biological activities of these compounds is warranted.
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