The present invention relates to novel compounds having the general formula: and pharmaceutical compositions thereof, and methods for inhibiting the activity of SHP2 phosphatase with the compounds and compositions of the invention. The present invention further relates to, but is not limited to, methods for suppressing tumor cell growth, ameliorating the pathogenesis of systemic lupus erythematosus, and the treatment of various other disorders, including Noonan syndrome, diabetes, neutropenia, neuroblastoma, melanoma, juvenile leukemia, juvenile myelomonocytic leukemia, chronic myelomonocytic leukemia, acute myeloid leukemia, and other cancers associated with SHP2 deregulation with the compounds and compositions of the invention, alone or in combination with other treatments. Other cancers associated with SHP2 deregulation include HER2-positive breast cancer, triple-negative breast cancer, ductal carcinoma of the breast, invasive ductal carcinoma of the breast, non-small cell lung cancer, esophageal cancer, gastric cancer, squamous-cell carcinoma of the head and neck (SCCHN), and colon cancer.