A new acridone alkaloid, melixyloidin (1), and two known alkaloids (2-3) were isolated from Melicope xanthoxyloides (F. Muell) T.G. Hartley leaves. The structure of melixyloidin were elucidated using NMR spectra and high-resolution ESIMS data. Acridone alkaloids 1-3 were evaluated against MCF-7 and HeLacells. 1,3,4-Trimethoxy-10-methylacridin-9-one (2) showed potent cytotoxic activity against MCF-7 cells with an IC50 value of 5.31 μM.

A new acridone alkaloid, melixyloidin (1), and two known alkaloids (2-3) were isolated from Melicope xanthoxyloides (F. Muell) T.G. Hartley leaves. The structure of melixyloidin were elucidated using NMR spectra and high-resolution ESIMS data. Acridone alkaloids 1-3 were evaluated against MCF-7 and HeLacells. 1,3,4-Trimethoxy-10-methylacridin-9-one (2) showed potent cytotoxic activity against MCF-7 cells with an IC50 value of 5.31 μM.

A new flavonol derivative, meliglabrin (1) along with three known flavonols, ternatin (2), meliternatin (3), and 5,4′-dihydroxy-3,7,3′-trimethoxyflavon (4) were isolated from the leaves of Melicope glabra (Blume) T.G. Hartley. Their structures were determined using extensive spectroscopic methods, including UV, IR, HRESIMS, 1D and 2D NMR. Compounds 1 – 4 were evaluated for their cytotoxicity against murine leukemia P-388 cells, compound 4 showed moderate activity.
Flavonols ; Leukemia ; Rutaceae

One new compound, macasiamenene V (1), and two known stilbenes (2 - 3) were isolated from Macaranga inermis Pax & K.Hoffm leaves. The structure of 1 was fully assigned based on the information on high-resolution MS and (1D, 2D) NMR spectra. The cytotoxic of compounds 1 - 3 was evaluated against 4T1 and HeLa cells. Compounds 2 - 3 showed high activity against HeLa cells with an IC 50 value of 1.09 and 0.88 μg/mL, respectively.

One new compound, macasiamenene V (1), and two known stilbenes (2 - 3) were isolated from Macaranga inermis Pax & K.Hoffm leaves. The structure of 1 was fully assigned based on the information on high-resolution MS and (1D, 2D) NMR spectra. The cytotoxic of compounds 1 - 3 was evaluated against 4T1 and HeLa cells. Compounds 2 - 3 showed high activity against HeLa cells with an IC 50 value of 1.09 and 0.88 μg/mL, respectively.

A new isoprenylated acetophenone, acronyculatin P (1) as well as two known compounds, 3′,5′-diisoprenyl-2′,4′-dihydroxy-6′-methoxyphenylethanone (2) and 3′-isoprenyl-2′,4′,6′-trihydroxyphenylethanone (3) were isolated from the stem bark of Acronychia pedunculata (L.) Miq. The structures were determined by HRESIMS, 1D and 2D NMR. The inhibitory activity of the isoprenylated acetophenone derivatives against murine leukemia P-388 cells showed compound 1 moderate activity with IC₅₀ 15.42 µM.
Leukemia ; Rutaceae ; Thoracica

A new isoprenylated stilbene, flavestinK (1) together with two known isoprenylated stilbenes, flavestin B (2), flavestin G (3), and two isoprenilated flavanones, 4-O-methyl-8-isoprenylnaringenin (4) and 8-isoprenyl-5,7-dihydroxyflavanone (5) were isolated from the leaves of Macaranga recurvata Gage. All of the structures have been determined based on HRESIMS, 1D and 2D NMR spectral data. All of the isolated compounds were evaluated for their cytotoxicity against three human cancer cells (HeLa, T47D and WiDr). Compound 1 showed higher activity than doxorubicin against HeLa cells with IC₅₀ value of 13.1 µg/mL.
Doxorubicin ; Euphorbiaceae ; Flavanones ; HeLa Cells ; Humans ; Stilbenes

Three isoprenylated flavanones were isolated from the leaves of Flemingia lineata (L.) Aiton. Among them are two new flavanones, flemilineatins A and B (1 - 2), along with 6-isoprenyl eridioctyol (3). Their structures were determined using HRESIMS data and NMR spectra. Flavanones 1 - 3 were assayed in the HeLa cancer cells. Compound 1 showed moderate activity with an IC 50 value of 11.2 µM.

Sesbagrandiflorain F (1), a novel 2-arylbenzofuran, and two more 2-arylbenzofurans (2-3), were isolated from the stem bark of Sesbania grandiflora L. Based on information HRESIMS data, 1D, and 2D NMR spectra, the structure of 1 was fully assigned. Compounds 1-3 were tested for cytotoxicity in MCF-7 and HeLacells. Compounds 1 and 3 showed moderate activity against MCF-7 cells with an IC50 value of 2.68 and 4.08 µg/mL,respectively. Conversely, all of the isolates were inactive towards HeLa cells.

Sesbagrandiflorain F (1), a novel 2-arylbenzofuran, and two more 2-arylbenzofurans (2-3), were isolated from the stem bark of Sesbania grandiflora L. Based on information HRESIMS data, 1D, and 2D NMR spectra, the structure of 1 was fully assigned. Compounds 1-3 were tested for cytotoxicity in MCF-7 and HeLacells. Compounds 1 and 3 showed moderate activity against MCF-7 cells with an IC50 value of 2.68 and 4.08 µg/mL,respectively. Conversely, all of the isolates were inactive towards HeLa cells.