Constituents of the leaves of Pseuderanthemum carruthersii (Seem.) Guill. var. atropurpureum (Bull.) Fosb.

► A new iridoid was isolated from the leaves of Pseuderanthemum carruthersii var. atropurpureum, together with 13 known compounds. ► Their chemical structures were elucidated by 1D and 2D NMR as well as HR-ESI-MS spectroscopic analysis. ► Some isolated compounds exhibited cytotoxic activities against the HeLa cervical cancer cell line and the MCF-7 breast cancer cell line at the concentration of 100 μg/mL.