The antibreast cancer therapeutic potential of quinazoline hybrids-Part I.

Breast cancer is the most commonly diagnosed cancer in women and is the leading cause of cancer-related mortality among female patients across the world. Chemotherapy is a critical means for breast cancer therapy, and administration of chemotherapy could reduce the risk of recurrence by approximately one-third in early breast cancer. However, multidrug resistance represents a principal obstacle to effective chemotherapeutic interventions against breast cancer and is an increasing clinical challenge, creating an urgent demand to explore innovative chemotherapeutics to combat this formidable disease. Quinazoline hybrids with structural and mechanistic diversity exhibit excellent activity against breast cancers including drug-resistant forms and have the potential to reduce side effects caused by the corresponding pharmacophores. Notably, lapatinib, a quinazoline-furan-sulfone hybrid, has already been launched for breast cancer therapy. Thus, quinazoline hybrids represent a fertile source for the development of novel chemotherapeutics for clinical deployment in the control and eradication of breast cancer. This review emphasizes the current scenario of quinazoline hybrids with antibreast cancer therapeutic potential and focuses on structure-activity relationships (SARs) and modes of action, developed from 2020 onwards, to facilitate the rational discovery of more effective antibreast cancer candidates. [Figure: see text]This review emphasizes the current landscape of quinazoline hybrids with antibreast cancer therapeutic potential, delves into structure-activity relationships and mechanisms of action developed from 2020 onwards, aiming to facilitate the rational discovery of more effective and less toxic candidates.