Kaur, ManpreetKumar, Raj2024-01-212024-08-132024-01-212024-08-132022-10-149780443186165978044318617210.1016/B978-0-443-18616-5.00003-Xhttps://kr.cup.edu.in/handle/32116/3570In the chapter, the synthesis along-with the biological importance of seven-membered ring fused pyrimidine-based derivatives has been discussed, where the seven-membered rings may consist of heteroatoms such as sulfur, oxygen, and nitrogen, which are supposed to provide important binding interactions within the binding pocket of certain receptors/enzymes like Epidermal growth factor receptor, HER, etc. � 2023 Elsevier Ltd. All rights reserved.en-USOxepinopyrimidinesPyrimidoazepinesPyrimidodiazepinesSeven-membered ring fused pyrimidinesThiadiazepinesThiepinopyrimidinesSeven-membered ring fused pyrimidine-based derivatives and their biological propertiesBook chapterhttps://linkinghub.elsevier.com/retrieve/pii/B978044318616500003XFused Pyrimidine-Based Drug Discovery