Results 71 to 80 of about 47,943 (166)

Antioxidant and cytotoxic activities of xanthones from Cudrania tricuspidata

, 2005
The new catecholic xanthone, 1,3,7-trihydroxy-4-(1,1-dimethyl-2-propenyl)- 5,6-(2,2-dimethylchromeno)-xanthone (1), was isolated from the root bark of Cudrania tricuspidata together with seven known xanthones.
J H Lee, K H Park, Tae Sook Jeong, B W Lee, Hyun Sun Lee, S T Lee, Woo Song Lee   +6 more
core   +1 more source

Protein Tyrosine Phosphatase 1B Inhibitors from the Roots of Cudrania tricuspidata

Molecules, 2015
A chemical investigation of the methanol extract from the roots of Cudrania tricuspidata resulted in the isolation of 16 compounds, including prenylated xanthones 1–9 and flavonoids 10–16.
Tran Hong Quang, Nguyen Thi Thanh Ngan, Chi-Su Yoon, Kwang-Ho Cho, Dae Gill Kang, Ho Sub Lee, Youn-Chul Kim, Hyuncheol Oh   +7 more
doaj   +1 more source

Xanthones from the green branch of Garcinia dulcis

, 2016
Two new prenylated xanthones, namely dulcisxanthone H and dulcisxanthone I along with garciniaxanthone C, were isolated from the dichloromethane extract of the green branch of Garcinia dulcis. Their structures were elucidated by the analysis of 1-D and 2-
Souwalak Phongpaichit (446803), Wilawan Mahabusarakam (538429), Pattama Mecawun (2593348)   +2 more
core   +1 more source

Coumarins, Xanthones and Related Compounds

, 2016
It has long been known that coumarins (γ-pyrones) and xanthones (α-pyrones) together form a large class of naturally occurring compounds exhibiting a wide range of biological activities.[...
Pascal Richomme, Richomme, Pascal
core   +1 more source

Cytotoxic polyprenylated xanthones from the resin of Garcinia hanburyi

, 2006
Thirteen xanthones (1-13) were isolated from the resin of Garcinia hanburyi. Among them, two new compounds (namely gaudichaudic acid, and isogambogenic acid, 1, 2), and one new natural product (deoxygaudichaudione A, 3) were identified on the basis of ...
Xu, LJ, Yang, DJ, Han, QB, Song, JZ, Hong-Xi XU, Yang, L, Qiao, CF, Chen, SL, Wang, YL, Xu, HX, Tso, TF   +10 more
core  

Analysis of caged xanthones from the resin of Garcinia hanburyi using ultra-performance liquid chromatography/electrospray ionization quadrupole time-of-flight tandem mass spectrometry

, 2008
On-line ultra high-performance liquid chromatography (UHPLC) coupled with electrospray quadrupole time-of-flight tandem mass spectrometry (ESI-QTOF-MS/MS/MS) has been developed for the analysis of a series of caged xanthones in the resin of Garcinia ...
Liu, X, Han, QB, Song, JZ, Ding, LS, Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Sichuan Prov, Peoples R China., Li, SL, Qiao, CF, Ding, LS, Zhou, Y, Yang, J, Xu, HX, Song-Lin Li, Yan Zhou, Jing Yang, Quan-Bin Han, Jing-Zheng Song, Chun-Feng Qiao, Hong-Xi Xu, Li-Sheng Ding, Xin Liu   +18 more
core   +1 more source

Xanthones with growth inhibition against HeLa cells from Garcinia xipshuanbannaensis

, 2008
Eight prenylated xanthones, bannaxanthones A-H (1-8), together with seven known compounds, were isolated from the acetone extract of the twigs of Garcinia xipshuanbannaensis. Their structures were elucidated by spectroscopic data interpretation.
Song, Jing Zheng, Qiao, Chun Feng, Han, Quan Bin, Tian, Hong Lei, Yang, Nian Yun, Chang, Donald C., Luo, Kathy Q., Xu, Hong Xi, Chen, Shi Lin   +8 more
core   +1 more source

Cytotoxic Prenylated Xanthones from the Pericarps of Garcinia mangostana

Molecules, 2014
Bioassay-guided fractionation of an ethanol extract of the pericarps of Garcinia mangostana led to the isolation of two new prenylated xanthones, named 1,3,7-trihydroxy-2-(3-methyl-2-butenyl)-8-(3-hydroxy-3-methylbutyl)-xanthone (1) and 1,3,8 ...
Zeng Xu, Lei Huang, Xiao-Hong Chen, Xiao-Feng Zhu, Xiao-Jun Qian, Gong-Kan Feng, Wen-Jian Lan, Hou-Jin Li   +7 more
doaj   +1 more source

Discriminating the xanthones in an extract of Swertia franchetiana by retention parameters

, 2005
The quantitative structure-retention relationship is one of the most actively studied topics in the field of chromatography. In this paper, retention parameters of components were used to discriminate the xanthones in a methanol extract of Swertia ...
Zhang, LF, Wang, SS, Xiao, HB, Wang, LX, 梁鑫淼, Liang, XM   +5 more
core  

Muchimangins G–J, Fully Substituted Xanthones with a Diphenylmethyl Substituent, from Securidaca longepedunculata

, 2016
Four highly oxygenated xanthones, muchimangins G–J (1–4), have been isolated from the roots of Securidaca longepedunculata collected in Democratic Republic of Congo.
Shigetoshi Kadota (510441), Suresh Awale (2020432), Yasuhiro Tezuka (612754), Dya F. Dibwe (2106898), Hiroyuki Morita (505542)   +4 more
core   +1 more source