One novel triterpenoid ester, oleanol 28-aldehyde 3-Oβ-palmitate (1), was isolated from the aerial part of Lobelia sessilifolia Lamb. along with seven known compounds, namely two triterpenoid esters (2, 3), one sterol (4), two coumarins (5, 6), and two triterpenes (7, 8). The structure of 1 was established on the basis of spectroscopic and chemical data.
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