217[degrees] dihedral angle between the newly formed ether ring and the two original coumarin
Being a privileged scaffold, coumarins
are reported to have bioactivities such as anticoagulant , anti-HIV [4, 5], antioxidant [6, 7], antibacterial , antiinflammatory [9, 10], anticancer , and dyslipidemic  activities.
New antileishmanial sesquiterpene coumarins
from Ferula narthex Boiss.
It seems that quantitatively some phenolic compounds increased and others, such as catechein, coumarin
, and cinnamic, found absent by irradiation treatment.
Results: The method established in this assay was successfully applied to the pharmacokinetic study of the selected coumarins
in rat plasma after oral administration of the extract of ADR, and the pharmacokinetic characteristics of sixteen coumarins
were clearly elucidated.
Column fractions of solanum incanum were subjected to various qualitative phytochemical tests like carbohydrates, tannin, saponin, alkaloid, quinines, glycosides, terpenoids, phenols and coumarin
as per standard procedure (13,14).
00 lactones (excluding coumarin
, metal coumarins
and etylokumaryniv) (fentanyl, sibazon)
EPs[R] 7630 (Dr William Schwabe Pharmaceuticals, Germany) is an aqueous ethanolic extract (11% m/m *; drug extract ratio 1:8-10) with characteristic constituents including highly oxygenated coumarins
, simple phenols and high molecular weight proanthocyanidins.
For example, some coumarins
inhibit the activity of vitamin K-dependent [gamma]-carboxylase involved in the activation of coagulation factors .
The topics include the eco-benign synthesis of indole derivatives employing diverse heterogeneous catalysts, solid heterogeneous catalysts based on sulfuric acid and transition-metal salts, the heterogeneous copper-catalyzed synthesis of bioactive heterocycles, silica sulfuric acid, applying silica-based heterogeneous catalysts, organometallic compounds, ultrasound as an efficient tool for synthesizing bioactive heterocycles, the synthesis of bioactive coumarins
, silver, and mesoporous materials from a novel silica source.
11] show that Chaptalia species produce a greater variety of coumarins
The presence of phytochemical compounds like alkaloids, steroids, terpenoids, tannins, saponins, coumarins
, flavonoids, and naphthoquinones was qualitatively evaluated.