Two new flavone glycosides from the aerial parts of Platycodon grandiflorum and their cytotoxic activity against human tumor cell lines

Planta Medica ◽  
2015 ◽  
Vol 81 (16) ◽  
Author(s):  
EB Kim ◽  
IS Kim ◽  
HS Kim ◽  
JH Kwak
1989 ◽  
Vol 42 (12) ◽  
pp. 1877-1878 ◽  
Author(s):  
SHIGETAKA ISHII ◽  
MIEKO NAGASAWA ◽  
YUKO KARIYA ◽  
HARUO YAMAMOTO

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Wilfredo Hernández ◽  
Juan Paz ◽  
Fernando Carrasco ◽  
Abraham Vaisberg ◽  
Evgenia Spodine ◽  
...  

The palladium(II) bis-chelate complexes of the type [Pd(TSC1-5)2] (6–10), with their corresponding ligands 4-phenyl-1-(acetone)-thiosemicarbazone, HTSC1(1), 4-phenyl-1-(2′-chloro-benzaldehyde)-thiosemicarbazone, HTSC2(2), 4-phenyl-1-(3′-hydroxy-benzaldehyde)-thiosemicarbazone, HTSC3(3), 4-phenyl-1-(2′-naphthaldehyde)-thiosemicarbazone, HTSC4(4), and 4-phenyl-1-(1′-nitro-2′-naphthaldehyde)-thiosemicarbazone, HTSC5(5), were synthesized and characterized by elemental analysis and spectroscopic techniques (IR and1H- and13C-NMR). The molecular structure of HTSC3, HTSC4, and [Pd(TSC1)2] (6) have been determined by single crystal X-ray crystallography. Complex6shows a square planar geometry with two deprotonated ligands coordinated toPdIIthrough the azomethine nitrogen and thione sulfur atoms in acisarrangement. Thein vitrocytotoxic activity measurements indicate that the palladium(II) complexes (IC50=0.01–9.87 μM) exhibited higher antiproliferative activity than their free ligands (IC50=23.48–70.86 and >250 μM) against different types of human tumor cell lines. Among all the studied palladium(II) complexes, the [Pd(TSC3)2] (8) complex exhibited high antitumor activity on the DU145 prostate carcinoma and K562 chronic myelogenous leukemia cells, with low values of the inhibitory concentration (0.01 and 0.02 μM, resp.).Corrigendum to “Synthesis and Characterization of New Palladium(II) Thiosemicarbazone Complexes and Their Cytotoxic Activity against Various Human Tumor Cell Lines”


2011 ◽  
Vol 53 (2) ◽  
Author(s):  
Justyna Stefanowicz-Hajduk ◽  
Anna Kawiak ◽  
Jerzy Gajdus ◽  
J. ochocka ◽  
Monika Paszkiewicz ◽  
...  

FEBS Letters ◽  
2000 ◽  
Vol 472 (2-3) ◽  
pp. 241-246 ◽  
Author(s):  
Jean-Luc Schlick ◽  
Philippe Dulieu ◽  
Bénédicte Desvoyes ◽  
Pascale Adami ◽  
Jean Radom ◽  
...  

Molecules ◽  
2019 ◽  
Vol 24 (7) ◽  
pp. 1375 ◽  
Author(s):  
Po-Yen Chen ◽  
Chih-Chao Chang ◽  
Hui-Chi Huang ◽  
Li-Jie Zhang ◽  
Chia-Ching Liaw ◽  
...  

Six new dammarane-type saponins, gypenosides CP1-6 (16), along with 19 known compounds 7–25, were isolated and characterized from the aerial parts of Gynostemma pentaphyllum. Among these compounds, eight dammarane-type saponins, 2, 5, 6, 7, 11, 12, 13, and 15, exhibited the greatest antiproliferative effects against two human tumor cell lines (A549 and HepG2).


Molecules ◽  
2019 ◽  
Vol 24 (22) ◽  
pp. 4015 ◽  
Author(s):  
Zhaocui ◽  
Xudong ◽  
Hanqiao ◽  
Xinyi ◽  
Guoxu ◽  
...  

Five new meroterpenoids, clavipols A–B (1–2) with a 12-membered ether ring and clavilactones G–I (3–5) having a 10-membered carbocycle connected to a hydroquinone and an α,β-epoxy/unsaturated lactone, were obtained from the fruiting bodies of the basidiomycete Clitocybe clavipes. Their structures were determined by comprehensive analysis of their spectroscopic data, and the absolute configuration of 1 was established by quantum chemical calculations of electronic circular dichroism (ECD). All the isolated compounds (1–5) were tested for their cytotoxic activity against three human tumor cell lines (Hela, SGC-7901, and SHG-44) in vitro after treatment for 48 h. Compound 4 exhibited moderate cytotoxic activity against Hela and SGC-7901 tumor cell lines, with IC50 values of 23.5 and 14.5 µM, respectively.


Author(s):  
Angelica E. Graminha ◽  
Cláudia Rodrigues ◽  
Alzir A. Batista ◽  
Letícia R. Teixeira ◽  
Elaine S. Fagundes ◽  
...  

Molecules ◽  
2018 ◽  
Vol 23 (10) ◽  
pp. 2558 ◽  
Author(s):  
Michael Kahnt ◽  
Lucie Fischer (née Heller) ◽  
Ahmed Al-Harrasi ◽  
René Csuk

Two easily accessible, natural occurring triterpenoids, betulinic and ursolic acid, were used as starting materials for the synthesis of novel cytotoxic agents. A set of 28 ethylenediamine-spacered carboxamides was prepared holding an additional substituent connected to the ethylenediamine group. The compounds were screened in SRB assays to evaluate their cytotoxic activity employing several human tumor cell lines. Betulinic acid-derived carboxamides 17–30 showed significantly higher cytotoxicity than their ursolic acid analogs 3–16. In particular, compounds 25 and 26 were highly cytotoxic, as indicated by EC50 values lower than 1 μM.


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