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Published on: March 5, 2014
Three New Steroids from the Roots of Marsdenia tenacissima
Ting-Ting Du1, Ming-Hui Fan1,2, Jin-Ling Liu1
1The MOE Key Laboratory of Standardization of Chinese Medicines and SATCM Key Laboratory of New Resources and Quality Evaluation of Chinese Medicines, Institute of Chinese Materia Medica (ICMM), Shanghai University of Traditional Chinese Medicine (SHUTCM), Shanghai, 201203, PR China.
Three new pregnane steroids were isolated from Marsdenia tenacissima roots. One compound, 11α-nicotinoyl-17β-marsdenin, showed significant cytotoxic activity against lung and ovarian cancer cells.
Area of Science:
- Natural Product Chemistry
- Medicinal Chemistry
- Pharmacology
Background:
- Marsdenia tenacissima is a plant source of bioactive compounds.
- Pregnane steroids represent a class of natural products with diverse biological activities.
Purpose of the Study:
- To isolate and characterize new pregnane steroids from Marsdenia tenacissima.
- To evaluate the cytotoxic activities of isolated compounds against human cancer cell lines.
Main Methods:
- Isolation and purification of compounds using chromatographic techniques.
- Structure elucidation via NMR spectroscopy, mass spectrometry, and X-ray diffraction.
- Cytotoxicity assays using A549, SKOV-3, MGC 803, and MCF-7 cancer cell lines.
Main Results:
- Three new pregnane steroids (1-3) and two known analogues (4-5) were identified.
- Compound 3 (11α-nicotinoyl-17β-marsdenin) demonstrated significant cytotoxic effects against A549 and SKOV-3 cells (IC50 values of 16.79 μM and 12.30 μM, respectively).
- Compounds showed moderate cytotoxicity against MGC803 and MCF-7 cells.
Conclusions:
- Marsdenia tenacissima is a valuable source of structurally novel pregnane steroids.
- 11α-nicotinoyl-17β-marsdenin possesses potent cytotoxic properties against specific human cancer types, warranting further investigation.
- The study contributes to the understanding of natural products' potential in cancer therapy.
