| Literature DB >> 28783356 |
Hai X Nguyen, Mai T T Nguyen, Nhan T Nguyen, Suresh Awale1.
Abstract
The ethanol extract of propolis from the Vietnamese stingless bee Trigona minor possessed potent preferential cytotoxicity against PANC-1 human pancreatic cancer cells in nutrient-deprived medium, with a PC50 value of 14.0 μg/mL. Chemical investigation of this extract led to the isolation of 15 cycloartane-type triterpenoids, including five new compounds (1-5), and a lanostane-type triterpenoid. The structures of the new compounds were elucidated on the basis of NMR spectroscopic analysis. Among the isolated compounds, 23-hydroxyisomangiferolic acid B (5) and 27-hydroxyisomangiferolic acid (13) exhibited the most potent preferential cytotoxicity against PANC-1 human pancreatic cancer cells under nutrition-deprived conditions, with PC50 values of 4.3 and 3.7 μM, respectively.Entities:
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Year: 2017 PMID: 28783356 DOI: 10.1021/acs.jnatprod.7b00375
Source DB: PubMed Journal: J Nat Prod ISSN: 0163-3864 Impact factor: 4.050