Chemical modification of coriolin B

Area of Science:

• Natural Products Chemistry
• Medicinal Chemistry
• Microbiology

Background:

• Coriolin group antibiotics, including 5-ketocoriolin B and diketocoriolin B, are known for their significant biological activities.
• Chemical modification of natural products is a key strategy for improving their therapeutic profiles.

Purpose of the Study:

• To synthesize novel derivatives of 5-ketocoriolin B with modifications at the C-8 position.
• To evaluate the antitumor and antibacterial activities of these new derivatives.
• To assess the chemical stability of the synthesized compounds.

Main Methods:

• Chemical synthesis of 5-ketocoriolin B derivatives.
• In vitro assays to determine antitumor activity.
• Antimicrobial susceptibility testing for antibacterial activity.
• Stability studies in acidic and alkaline conditions.

Main Results:

• Several C-8 modified derivatives of 5-ketocoriolin B were successfully synthesized.
• These derivatives displayed antitumor and antibacterial activity comparable to highly active known coriolins (5-ketocoriolin B and diketocoriolin B).
• The novel derivatives exhibited superior stability in both acidic and alkaline environments compared to 5-ketocoriolin B and diketocoriolin B.

Conclusions:

• Chemically modified 5-ketocoriolin B derivatives retain significant antitumor and antibacterial efficacy.
• Enhanced chemical stability in varying pH conditions makes these derivatives promising candidates for further drug development.
• These findings expand the potential therapeutic applications of coriolin-based antibiotics.