Results 51 to 60 of about 1,494 (196)

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

Transcription Factors in Alkaloid Engineering [PDF]

open access: yes, 2021
Plants produce a large variety of low-molecular-weight and specialized secondary compounds. Among them, nitrogen-containing alkaloids are the most biologically active and are often used in the pharmaceutical industry. Although alkaloid chemistry has been
Sato, Fumihiko, Yamada, Yasuyuki
core   +1 more source

Synthesis of Pseudellone Analogs and Characterization as Novel T-type Calcium Channel Blockers

open access: yesMarine Drugs, 2018
T-type calcium channel (CaV3.x) blockers are receiving increasing attention as potential therapeutics for the treatment of pathophysiological disorders and diseases, including absence epilepsy, Parkinson’s disease (PD), hypertension, cardiovascular
Dan Wang   +4 more
doaj   +1 more source

Photoprotective Activity of Topsentin, A Bis(Indole) Alkaloid from the Marine Sponge Spongosorites genitrix, by Regulation of COX-2 and Mir-4485 Expression in UVB-Irradiated Human Keratinocyte Cells

open access: yesMarine Drugs, 2020
Skin is an important barrier to protect the body from environmental stress. However, exposure to ultraviolet radiation (UV) and various environmental oxidative stresses can cause skin inflammation.
Jiyoung Hwang   +5 more
doaj   +1 more source

Phytochemical and Pharmacological Properties of the Genus Melodinus – A Review [PDF]

open access: yes, 2016
Melodinus is an important genus comprising of approximately 53 species of medicinal plants (Apocynaceae). Some species have been used in Chinese folk medicine for the treatment of meningitis in children, rheumatic heart diseases, and diuresis, as well as
Chen, Ye-Gao   +2 more
core   +2 more sources

Marine indole alkaloids [PDF]

open access: yes, 2015
Marine indole alkaloids comprise a large and steadily growing group of secondary metabolites. Their diverse biological activities make many compounds of this class attractive starting points for pharmaceutical development.
Netz, Natalie, Opatz, Till
core   +1 more source

Marine Sponge Derived Natural Products between 2001 and 2010: Trends and Opportunities for Discovery of Bioactives [PDF]

open access: yes, 2014
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).Abstract: Marine sponges belonging to the phylum Porifera (Metazoa ...
Franco, Christopher Milton   +3 more
core   +2 more sources

Chapter 3 Noniridoid Bisindole Alkaloids

open access: yes, 1995
This chapter discusses that indole is a reactive nucleus prone to dimerization when it is isolated or a part of tryptamine or tryptophan, which themselves are reactive toward many functionalities. For these reasons, bisindoles, the majority of which are of iridoid origin, are frequently isolated in nature. Besides these “dimers,” there exists a growing
Sapi, J., Massiot, G.
openaire   +1 more source

Fishing for Targets of Alien Metabolites: A Novel Peroxisome Proliferator-Activated Receptor (PPAR) Agonist from a Marine Pest [PDF]

open access: yes, 2018
Although the chemical warfare between invasive and native species has become a central problem in invasion biology, the molecular mechanisms by which bioactive metabolites from invasive pests influence local communities remain poorly characterized.
Amodeo, Pietro   +21 more
core   +1 more source

The Raputindoles: Novel Cyclopentyl Bisindole Alkaloids from Raputia simulans

open access: yesOrganic Letters, 2010
A novel class of bisindole alkaloids is established by the isolation and structural determination of raputindoles A-D (1-4) from the Amazonian plant Raputia simulans Kallunki (Rutaceae). Complete spectroscopic characterization was accomplished by means of NMR spectroscopy and APCI (+) HRMS.
Vougogiannopoulou, K.   +4 more
openaire   +3 more sources

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