Triterpenoids and steroids from the stem bark of <i>Caloncoba glauca</i> (P. Beauv.) Gilg (Achariaceae)

Two previously unreported triterpenoids, glaucalic acid (<b>1</b>) and glaucalactone D (<b>2</b>), together with five known compounds identified as trichadenic acid B (<b>3</b>), friedelin (<b>4</b>), <i>β</i>-sitosterol (<b>5</b>), stigmasterol (<b>6</b>), and stigmasterol 3-O-<i>β</i>-D-glucopyranoside (<b>7</b>), were isolated from the methanolic extract of the stem bark of <i>Caloncoba glauca</i> (Achariaceae). The structural elucidation of all isolated compounds was achieved through the analysis of spectroscopic data, which included one-dimensional and two-dimensional nuclear magnetic resonance (NMR) spectroscopy, high-resolution mass spectrometry (HRMS), and comparisons with published data. These findings expand the known chemical diversity of the genus <i>Caloncoba</i> and reinforce the significance of friedelane-type triterpenoids as chemomarkers for this genus.