Yingxi Intelligent Technology (Shanghai) Co. Ltd. has identified substituted monocyclic or bicyclic heterocyclic compounds acting as fibroblast growth factor receptor (FGFR) inhibitors and reported to be useful for the treatment of asthma, cancer, chronic heart failure, chronic obstructive pulmonary disease, rheumatoid arthritis, inflammation, autoimmune and Parkinson’s disease, among others.