A novel tetranortriterpenoid named kokosanolide D has been isolated from fruit peels of Lansium domesticum. The structure of kokosanolide D was elucidated primarily on the basis of spectroscopic data including infrared, 1D and 2D-NMR, as well as high resolution mass spectroscopy analysis and comparison with related compounds previously reported.

Dysoxylum merupakan genus besar dari Famili Meliaceae yang terdistribusi di Indonesia. Beberapa spesies Dysoxylum telah dilaporkan mengandung senyawa seskuiterpenoid. Pada penelitian ini, satu senyawa seskuiterpenoid trisiklik, prostanterol (1) telah diisolasi kulit batang Dysoxylum excelsum. Senyawa 1 untuk pertama kali diisolasi dari tumbuhan tersebut. Struktur molekul senyawa 1 ditentukan melalui spektroskopi NMR 1D dan 2D yang dibandingkan terhadap data yang telah dilaporkan sebelumnya.

No abstract

The diversity of structures of triterpenoids provides a variety of interesting pharmacological effects, one of them being anticancer. Sources of triterpenoids are found in Dysoxylum excelsum, it is still rarely studied, and it potentially contains triterpenoids with cytotoxic activity. Therefore, the research aimed to isolate the triterpenoids from the stem bark of D. excelsum and determine their cytotoxic efficacy against the breast cancer cells of MCF-7. The dried stem bark of D. excelsum was macerated using methanol and then fractionated with n-hexane and ethyl acetate to obtain the corresponding fractions. Two triterpenoids, 3α,7α-dihydroxyapotirucalla-14,24-Z-dien-26-oic acid (1) and masticadienonic acid or 3-oxo-tirucalla-7,24-Z-dien-26-oic acid (2) were isolated in the first place from the Dysoxylum genus. Compounds 1 and 2 were assayed for their cytotoxic potency anti- MCF-7 using the MTT assay and gave moderate IC50 values of 60.87 and 72.86 µM, respectively. Based on their analogs, partial structure modification of the compounds might increase the activity; thus, it can be further utilized as better lead compounds for anticancer drugs candidate.