@article {218, title = {Cytotoxic Compounds from Kibatalia gitingensis (Elm.) Woodson}, journal = {Pharmacognosy Journal}, volume = {9}, year = {2017}, month = {December 2016}, pages = {8-13}, type = {Original Article}, chapter = {8}, abstract = {

Ursolic acid (1), squalene (2), a mixture of \α-amyrin acetate (3a) and lupeol acetate (3b), and isoscopoletin (4), isolated from the dichloromethane extracts of the leaves and twigs of Kibatalia gitingensis, were evaluated for their cytotoxic activities against three human cancer cell lines, breast (MCF-7) and colon (HT-29 and HCT-116), and a normal cell line, human dermal fibroblast-neonatal (HDFn), using the in vitro PrestoBlue cell viability assay. Compounds 1-4 exhibited strong cytotoxic activities against HT-29 cells with IC50 values ranging from 0.6931 to 1.083 \μg/mL. Furthermore, 1-4 were moderately cytotoxic against HCT-116 cells with IC50 values ranging from 4.065 to 11.09 \μg/mL. These compounds were least cytotoxic against MCF-7 cells with IC50 values ranging from 8.642 to 25.87 \μg/mL. The most cytotoxic against HT-29 cells, HCT-116 cells and MCF-7 cells are 2, 4 and 1, respectively.

}, keywords = {Apocynaceae, Cytotoxicity, HCT-116, HDFn, HT-29, Isoscopoletin, Kibatalia gitingensis, Lupeol acetate, MCF-7, PrestoBlue{\textregistered} cell viability assay., Squalene, Ursolic acid, α-amyrin acetate}, doi = {10.5530/pj.2017.1.2}, author = {Mariquit M. De Los Reyes and Glenn G. Oyong and Vincent Antonio S. Ng and Chien-Chang Shen and Consolacion Y. Ragasa} } @article {196, title = {Triterpenes from Hoya paziae Kloppenb.}, journal = {Pharmacognosy Journal}, volume = {8}, year = {2016}, month = {Oct 2016}, pages = {487-489}, type = {Original Article}, chapter = {487}, abstract = {

Chemical investigation of the dichloromethane extracts of the stems of Hoya paziae Kloppenb. led to the isolation of taraxerol (1), taraxeryl acetate (2), and a mixture \α-amyrin acetate (3), and \β-amyrin acetate (4) in about 2.5:1 ratio. The structures of 1\–4 were identified by comparison of their NMR data with those reported in the literature.

}, keywords = {Apocynaceae, Hoya paziae, taraxerol, taraxeryl acetate, α-amyrin acetate, β-amyrin acetate}, doi = {10.5530/pj.2016.5.13}, author = {Melissa Borlagdan and Fernando B. Aurigue and Ian A. Van Altena and Consolacion Y. Ragasa} }