The present disclosure provides compounds of Formula (I), wherein A, A1, A2, A3, R3, Z and Z1 are as defined in the specification, and the salts and solvates thereof. The present disclosure also relates to uses of the compounds as cereblon (CRBN) ubiquitination inhibitors, as synthetic intermediates that can be used to prepare PROTAC molecules, or as PROTAC molecules. The present disclosure also relates to uses of the compounds, e.g., in treating or preventing cancer and other diseases.