This invention is in the field of medicinal chemistry. In particular, the invention relates to a new class of small-molecules having a triazole-methyl-piperidinyl-pyrolyl-propenone structure which function as modulators of shared epitope (SE)—;calreticulin (CRT) binding and/or interaction, and their use as therapeutics for the treatment of immunoregulatory abnormalities (e.g., autoimmune diseases, inflammatory diseases (e.g., chronic inflammatory disease), and bone erosive diseases) by selectively inhibiting SE-CRT interactions and/or signal transduction pathways commonly overactive or dysregulated in arthritic and/or other diseases or conditions.