Results 91 to 100 of about 46,318 (209)
Hypericum seeds have recently been identified as a natural source of different xanthone derivatives. Two main constituents, the tetrahydroxyxanthones THX-1 and -2, were identified in methanolic extracts of H. perforatum and H.
Lorenz, Peter +7 more
doaj +1 more source
Zhongyan Tang,1,* Lihua Lu,2,* Zhengxiang Xia3 1Department of Emergency and Critical Care Medicine, Jin Shan Hospital, Fudan University, Shanghai 201508, People’s Republic of China; 2Department of Neonatology, International Peace Maternity and ...
Tang Z, Lu L, Xia Z
doaj
Three Novel Xanthones from Garcinia paucinervis and Their Anti-TMV Activity
Phytochemical investigations of the leaves of Garcinia paucinervis resulted in the isolation of three new xanthones 1–3 and five known analogues 4–8. Structural elucidations of 1–3 were performed by spectral methods such as 1D and 2D (HMQC, HMBC, and ...
Qiu-Fen Hu +6 more
doaj +1 more source
Cytotoxic Xanthones from Hypericum stellatum, an Ethnomedicine in Southwest China [PDF]
Hypericum stellatum, a species endemic to China, is used to treat hepatitis by several ethnic groups in Guizhou Province. This research was inspired by the traditional medicinal usage of H.
Zhang, Ruifei +7 more
core +1 more source
ANTIOXIDANT ACTIVITY OF XANTHONE DERIVATIVES.
Certain xanthone derivatives, such as these present in mangosteen fruits, show strong antioxidant activity. On the other hand, evidences accumulated that oxidative stress is involved in epileptogenesis. Therefore, the aim of the present study was to estimate total antioxidant capacity (expressed as a ferric reducing antioxidant power - FRAP) and ...
Francik, Renata +3 more
openaire +2 more sources
Studies in the Xanthone Group.
Studies in the Xanthone Group.
ANUKUL CHANDRA SIRCAR +1 more
openaire +2 more sources
Trioxygenated naturally occurring xanthones
This review discusses the chemistry of 127 trioxygenated xanthones occurring in six families, 37 genera and 107 species of higher plants, and 55 which are fungal or lichen metabolites.
Nagem, Tanus Jorge, Peres, Valdir
core +2 more sources
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 +9 more
core
Isolamento e caracterização de stirilpironas e Cumarinas de polygala sabulosa e avaliação da atividade Ansiolítica [PDF]
TCC (graduação) - Universidade Federal de Santa Catarina. Centro de Ciências Físicas e Matemáticas. Curso de Química.No presente trabalho, a reinvestigação fitoquímica da espécie P.
BASTOS, Juliana
core
A new insight into cardiovascular protective potentials of hydroxylated xanthones
Natural products play important roles as origins of new cardiovascular drugs. Xanthones are polyphenolic compounds that carry a dibenzo-γ-pyrone skeleton and exhibit a broad range of pharmacological activities.
Ng, Chin Theng +5 more
core +1 more source

