D-ring modified novel isosteviol derivatives: design, synthesis and cytotoxic activity evaluation

Area of Science:

• Organic Chemistry
• Medicinal Chemistry
• Pharmacology

Background:

• Isosteviol, a derivative of steviol, serves as a versatile scaffold for synthesizing novel compounds.
• Exploring new cytotoxic agents is crucial for developing more effective cancer therapies.
• Modification of the D-ring of isosteviol can lead to compounds with unique pharmacological properties.

Purpose of the Study:

• To synthesize a library of novel isosteviol derivatives.
• To evaluate the in vitro cytotoxic activities of these synthesized compounds against human tumor cell lines.
• To identify potent anti-cancer agents derived from isosteviol.

Main Methods:

• Facile synthesis of polyhydric, amino alcohol, and tricyclic derivatives via D-ring modification of isosteviol.
• In vitro screening of synthesized compounds for cytotoxic activity against four human tumor cell lines (EC9706, PC-3, HCT-116, and one other).
• Comparison of the cytotoxicity of the most potent compound with a positive control (cisplatin).

Main Results:

• A series of novel isosteviol derivatives were successfully synthesized.
• The compound 15-α-aminomethyl-16-β-hydroxyl isosteviol (compound 23) demonstrated significant in vitro cytotoxicity.
• Compound 23 exhibited superior cytotoxic activity compared to cisplatin against EC9706, PC-3, and HCT-116 cell lines.

Conclusions:

• D-ring modification of isosteviol is an effective strategy for generating cytotoxic compounds.
• 15-α-aminomethyl-16-β-hydroxyl isosteviol is a promising lead compound for further investigation as an anti-cancer agent.
• Novel isosteviol derivatives hold potential for the development of new chemotherapeutic drugs.