Zhejiang Hisun Pharmaceutical Co. Ltd. and Shanghai Aryl Pharmtech Co. Ltd. have disclosed bicyclic heteroaryl derivatives acting as tyrosine-protein phosphatase non-receptor type 11 (PTPN11; PTP-2C; SHP-2) allosteric inhibitors reported to be useful for the treatment of cancer, Noonan syndrome, LEOPARD syndrome, fibrosis, cardiovascular and immunological disorders.