A Prelude to Biogermylene Chemistry*

Area of Science:

• Organometallic Chemistry
• Medicinal Chemistry
• Main-Group Chemistry

Background:

• Germylenes, compounds containing a divalent germanium atom, have historically been limited in biological applications due to their inherent instability.
• The development of stable germylene complexes is crucial for exploring their potential in various fields, including medicine.

Purpose of the Study:

• To synthesize and characterize a stable germylene complex for potential biological applications.
• To evaluate the antiproliferative and cytotoxic effects of the novel germylene DPMGeOH on human cancer and normal cells.

Main Methods:

• Isolation and characterization of air-, water-, and culture-medium-stable germylene DPMGeOH.
• In vitro assessment of antiproliferative activity against human cancer cell lines.
• Evaluation of cytotoxicity on normal epithelial cells.

Main Results:

• The synthesized germylene, DPMGeOH, demonstrated significant antiproliferative effects against human cancer cells, comparable to the efficacy of cisplatin.
• Compound DPMGeOH exhibited minimal cytotoxicity towards normal epithelial cells, similar to established anticancer drugs.
• The stability of DPMGeOH in air, water, and culture media facilitates its handling and potential therapeutic use.

Conclusions:

• The development of stable germylene DPMGeOH overcomes previous limitations, enabling biological investigations.
• DPMGeOH presents a promising candidate for anticancer drug development with a favorable therapeutic window.
• These findings establish a foundation for future research into the biological potential of germylenes and advance low-valent main-group chemistry.