Results 21 to 30 of about 39,725 (232)

Efficient Separation of Four Antibacterial Diterpenes from the Roots of Salvia Prattii Using Non-Aqueous Hydrophilic Solid-Phase Extraction Followed by Preparative High-Performance Liquid Chromatography

open access: yesMolecules, 2018
An efficient preparative procedure for the separation of four antibacterial diterpenes from a Salvia prattii crude diterpenes-rich sample was developed.
Jun Dang   +10 more
doaj   +1 more source

Contribution of microscopy for understanding the mechanism of action against trypanosomatids [PDF]

open access: yes, 2018
Transmission electron microscopy (TEM) has proved to be a useful tool to study the ultrastructural alterations and the target organelles of new antitrypanosomatid drugs.
A Martinez-Palomo   +90 more
core   +1 more source

Some progress on the chemistry of natural bioactive terpenoids form Chinese medicinal plants

open access: yesMemorias do Instituto Oswaldo Cruz, 1991
(1) Pseudolaric acids - Novel diterpenes, Pseudolaric acid A, B, C and D were isolated from Pseudolarix kaempferi Gorden (pinaceae). Their structures were assigned by spectroscopic data and chemical correlations.
Bing-Nan Zhou
doaj   +1 more source

The cholesterol-raising diterpenes from coffee beans increase serum lipid transfer protein activity levels in humans [PDF]

open access: yes, 1997
Cafestol and kahweol–diterpenes present in unfiltered coffee— strongly raise serum VLDL and LDL cholesterol and slightly reduce HDL cholesterol in humans. The mechanism of action is unknown.
Gent, T. van   +6 more
core   +3 more sources

Characterization of phloroglucinol derivatives and diterpenes in Euphorbia ebracteolata Hayata by utilizing ultra-performance liquid chromatography/quadrupole time-of-flight mass spectrometry

open access: yesJournal of Pharmaceutical Analysis, 2013
Euphorbia ebracteolata Hayata (E. ebracteolata) is a Chinese herbal medicine used for the treatment of tumor diseases. An ultra-performance liquid chromatography/quadrupole time-of-flight mass spectrometry (UPLC–Q–TOF/MS) based chemical profiling ...
Can-Jian Wang   +4 more
doaj   +1 more source

Unified short syntheses of oxygenated tricyclic aromatic diterpenes by radical cyclization with a photoredox catalyst

open access: yesCommunications Chemistry, 2023
The biomimetic two-phase strategy employing polyene cyclization and subsequent oxidation/substitution is an effective approach for divergent syntheses of [6-6-6]-tricyclic diterpenes.
Riichi Hashimoto   +3 more
doaj   +1 more source

Diterpenes from the Marine Algae of the Genus Dictyota

open access: yesMarine Drugs, 2018
Species of the brown algae of the genus Dictyota are rich sources of bioactive secondary metabolites with diverse structural features. Excellent progress has been made in the discovery of diterpenes possessing broad chemical defensive activities from ...
Jiayun Chen   +6 more
doaj   +1 more source

Microbubbles enhanced synthetic phorbol ester degradation by ozonolysis [PDF]

open access: yes, 2014
A phorbol-12-myristate-13-acetate (TPA) is a synthetic analogue of phorbol ester (PE), a natural toxic compound of Euphorbiaceae plant. The oil extracted from plants of this family is useful source for primarily biofuel.
Kuvshinov, Dmitriy   +2 more
core   +2 more sources

A Review on Bioactivities of Tobacco Cembranoid Diterpenes

open access: yesBiomolecules, 2019
Cembranoids are carbocyclic diterpenes comprising four isoprene units and are natural products with a parent skeleton consisting of a 14-membered ring.
Ning Yan   +5 more
doaj   +1 more source

Photochemical Approaches to Complex Chemotypes: Applications in Natural Product Synthesis. [PDF]

open access: yes, 2016
The use of photochemical transformations is a powerful strategy that allows for the formation of a high degree of molecular complexity from relatively simple building blocks in a single step. A central feature of all light-promoted transformations is the
Kärkäs, Markus D.   +2 more
core   +2 more sources

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