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Updated: May 3, 2026

Functionalized Spirocyclic Heterocycle Synthesis and Cytotoxicity Assay
Published on: February 9, 2021
Synthesis and cytotoxic activity of MOM-ether analogs of isosteviol
Ahmed Malki1, Rumita Laha2, Stephen C Bergmeier2
1Department of Health Sciences, Biomedical Program College of Arts and Sciences, Qatar University, Doha, Qatar; Biochemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
Abstract:
Lung cancer is one of the most common malignancies worldwide. In this Letter, novel MOM-ether analogs of isosteviol were designed and synthesized to be tested for anticancer activities against H1299 lung cancer cell lines. The effects of these derivatives were studied in H1299 human large cell lung carcinoma cells that are null for p53 and compared to normal counterparts NL-20 normal lung epithelial cells. The initial screening of twelve MOM-ether analogs of isosteviol derivatives on H1299 lung cancer cells by MTT assay revealed that two derivatives (an ester and a carbamate) were the most potent in reducing cell viability. The IC50 values for these derivatives were determined to be 14 and 21 μM respectively. We compared the cytotoxicity of the best derivatives in H1299 lung cancer cells and NL-20 normal lung epithelial cells. Both derivatives showed lower cytotoxic effects on NL-20 normal lung epithelial cells. Moreover, both derivatives induced apoptosis in H1299 lung cancer cells more than NL-20 normal lung epithelial cells.
Insights
Novel MOM-ether analogs of isosteviol show potent anticancer activity against lung cancer cells. These compounds effectively reduced cancer cell viability and induced apoptosis with lower toxicity to normal lung cells.
Area of Science:
- Medicinal Chemistry
- Oncology
- Pharmacology
Background:
- Lung cancer remains a leading global malignancy.
- Developing novel therapeutic agents is crucial for improving patient outcomes.
- Isosteviol derivatives offer a promising scaffold for anticancer drug discovery.
Purpose of the Study:
- To design and synthesize novel MOM-ether analogs of isosteviol.
- To evaluate the in vitro anticancer activities of these analogs against human lung cancer cell lines.
- To compare the efficacy and safety of the most potent derivatives in cancer versus normal lung cells.
Main Methods:
- Synthesis of twelve MOM-ether analogs of isosteviol.
- Anticancer activity screening using MTT assay on H1299 lung cancer cells.
- Cytotoxicity assessment on H1299 (p53-null) and NL-20 (normal) lung cells.
- Apoptosis induction analysis.
Main Results:
- Two derivatives, an ester and a carbamate, exhibited significant cytotoxicity against H1299 cells.
- The IC50 values for these potent derivatives were determined as 14 μM and 21 μM.
- Both compounds demonstrated reduced toxicity towards normal NL-20 lung cells.
- Enhanced apoptosis induction was observed in H1299 cells compared to NL-20 cells.
Conclusions:
- Novel MOM-ether analogs of isosteviol possess significant anticancer potential.
- The synthesized ester and carbamate derivatives are promising candidates for further lung cancer research.
- These compounds exhibit a favorable therapeutic window, targeting cancer cells more effectively than normal cells.
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