Pyrrolidine, also known as tetrahydropyrrole, is a saturated five-membered heterocyclic ring, which is miscible with water. Pyrrolidine exists in many alkaloids and drug molecules, such as kappa opioids, antagonists of dopamine D4 receptors, and HIV reverse transcriptase inhibitors.
The ADC linker is one of the three main components of antibody drug conjugates (ADCs), linking the antibody to the effective drug (payload) through chemical bonds. ADC linkers play a key role in determining the overall success of antibody drug conjugates. One of the major challenges in developing safe and effective ADC drugs is to assemble an ideal chemical linker between the cytotoxic payload and the mAb. Well-designed ADC linkers can help the selective delivery of antibodies at the tumor site and the accurate release of cytotoxic drugs.