Tan Hor YueAnthony Ho Siong HockLim Chan KiangLim Yang Mooi2024-12-272024-12-272012-0610.1177/1934578x1200700621https://dspace-cris.utar.edu.my/handle/123456789/8584Phytochemical studies of the leaves and rhizomes of Paraboea pa niculata (Gesneriaceae) are reported for the first time. Three phenylethanoid glycosides were isolated and characterized as 3,4-dihydroxyphenethyl-(3″- O-β-D-apiofuranosyl)- β-D-glucopyranoside, calceoralarioside E, and acteoside. These isolates exhibited weak cytotoxic activity against the K-562 cell line with a 50% of cell killing rate of 40.18 μM, 27.05 μM, and 27.24 μM, respectively. In the DPPH free radical scavenging assay, their IC₅₀ values were determined as 75.89 μM, 25.00 μM, and 26.04 μM, respectively.journal-article