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Two new pregnane steroidal glycosides from Cynanchum taihangense.
Yu-Bo Wang1,2,3, Shan-Shan Su4, Ming-Xu Tang2,3
1School of Pharmacy, Jinzhou Medical University , Jinzhou , China.
Natural Product Research
|October 5, 2019
Summary
Two new pregnane steroidal glycosides, cynataihosides G and H, were isolated from Cynanchum taihangense. These compounds showed no significant cytotoxicity against tested human tumor cell lines.
Area of Science:
- Natural Products Chemistry
- Medicinal Chemistry
- Pharmacognosy
Background:
- Cynanchum taihangense is a plant source of bioactive compounds.
- Steroidal glycosides are a class of natural products with diverse biological activities.
- Ongoing research aims to discover novel compounds from medicinal plants.
Purpose of the Study:
- To isolate and characterize new pregnane steroidal glycosides from Cynanchum taihangense.
- To evaluate the cytotoxic activity of the isolated compounds against human tumor cell lines.
Main Methods:
- Isolation of compounds using 95% ethanol extract.
- Structure elucidation using 1D and 2D NMR, HR-ESI-MS, and chemical methods.
- Cytotoxicity testing against HL-60, THP-1, and PC-3 cell lines.
Main Results:
- Two new pregnane steroidal glycosides, cynataihosides G (1) and H (2), were identified.
- Compound 1 possesses a novel aglycone structure.
- Neither compound exhibited significant cytotoxicity against the evaluated cancer cell lines.
Conclusions:
- The chemical investigation of Cynanchum taihangense yielded two novel steroidal glycosides.
- The isolated compounds, cynataihosides G and H, do not possess significant cytotoxic effects on the tested tumor cell lines.
- Further research may explore other biological activities or structural modifications.
