PROTACs (Proteolytic Targeting Chimeric Molecules) are heterobifunctional protein degraders and are promising targeted therapy candidates for cancer. PROTAC is composed of three parts, one end is connected with the ligand bound by E3 ligase, the other end is connected with the ligand bound by the target protein, and the middle is the linker.
Protac Linkers
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Quinazolines belong to heterocyclic chemistry, also known as 1,3-naphthalenes. The backbone consists of two six-membered aromatic rings fused to each other, with two nitrogen atoms at positions 1 and 3 on the backbone. The presence of these two nitrogen atoms in quinazoline increases its importance in pharmaceutical and biological reactions. Quinazolines and their derivatives are among the most important heterocyclic compounds due to their diverse chemical reactivity and important range of biological activities.