Investigation of the constituents of the stem and root barks of Ulmus davidiana var. japonica resulted in the isolation of five new triterpene esters named ulmicin A-E (1-5). Using several spectroscopic techniques, their structures were determined to be 3beta,11alpha,15alpha-trihydroxylup-20(29)-ene-11-(3'-methoxy-4'-hydroxybenzoyl ester) (1), 3beta,11alpha,15alpha-trihydroxylup-20(29)-ene-11-(4'-hydroxybenzoyl ester) (2), 3beta,11alpha,15alpha-trihydroxylup-20(29)-ene-11-(3'-methoxy-4'-hydroxybenzoyl)-15-(4'-hydroxybenzoyl ester) (3), 3beta,11alpha,15alpha-trihydroxylup-20(29)-ene-11,15-di(3'-methoxy-4'-hydroxybenzoyl ester) (4), and 3beta,11alpha,15alpha-trihydroxylup-20(29)-ene-11-(3'-methoxy-4'-hydroxybenzoyl)-15-(benzoyl ester) (5). All five compounds showed significant neuroprotective activities against glutamate-induced neurotoxicity in primary cultures of rat cortical cells.