Results 41 to 50 of about 297,330 (349)

Total Synthesis of (+)‐Melonine and (+)‐N4‐Oxy Melonine Enabled by an Intramolecular Alkene Diamination Reaction

open access: yesAngewandte Chemie, EarlyView.
A complexity‐generating intramolecular alkene diamination constitutes the pivotal step in the enantioselective synthesis of the title natural products featuring a strained, cage‐like pentacyclic architecture. Abstract Among more than four thousand monoterpene indole alkaloids (MIAs) isolated to date, only a few feature a 2,2,3‐trisubstituted indoline ...
Vincent Goëlo, Qian Wang, Jieping Zhu
wiley   +2 more sources

Bioactive Azepine-Indole Alkaloids from Psychotria nemorosa.

open access: yesJournal of Natural Products, 2020
Phytochemical investigation of the alkaloid extract of the aerial parts of Psychotria nemorosa led to the isolation and characterization of 10 azepine-indole alkaloids, i.e., cimitrypazepine (1), fargesine (2), nemorosines A (3), and B (12 ...
L. Klein-Júnior   +6 more
semanticscholar   +1 more source

ZZE-Configuration of chromophore ß-153 in C-phycocyanin from Mastigocladus laminosus [PDF]

open access: yes, 1987
The photochemistry of C-phycocyanin has been studied after denaturation in the dark. It shows an irreversible reaction which has characteristics of a Ζ,Ζ,Ε- to Z,Z,Z-isomerization of dihydrobilins. Its amplitude depends on the reaction conditions, with
Bode, W.   +7 more
core   +1 more source

The Therapeutic Prospects of Naturally Occurring and Synthetic Indole Alkaloids for Depression and Anxiety Disorders

open access: yesEvidence-Based Complementary and Alternative Medicine, 2020
Depression and anxiety are the most common disorders among all age groups. Several antidepressant drugs including benzodiazepine, antidepressant tricyclics, azapirone, noradrenaline reuptake inhibitors, serotonin selective reuptake inhibitors, serotonin,
Samman Munir   +9 more
semanticscholar   +1 more source

Structural Elucidation and Cytotoxic Activity of New Monoterpenoid Indoles from Gelsemium elegans

open access: yesMolecules, 2023
Two new monoterpenoid indole alkaloids, gelselegandines F (1) and G (2), were isolated from the aerial parts of Gelsemium elegans. Their structures were elucidated by means of spectroscopic techniques and quantum chemical calculations.
Da Song   +10 more
doaj   +1 more source

RHEOLOGICAL PROPERTIES OF INDOLIC ALKALOIDS OBTAINED FROM NATURAL PRODUCTS [PDF]

open access: yesRomanian Journal of Petroleum & Gas Technology
Indole chemistry is a fascinating and complex field. The foul-smelling indole molecule is the building block for various natural and chemical products. Moreover, some indole derivatives are vital pharmaceutical products or essential intermediates. Indole
Ana-Maria Neculai   +2 more
doaj   +1 more source

Exploring the Phytochemical Landscape of the Early-Diverging Flowering Plant Amborella trichopoda Baill. [PDF]

open access: yes, 2019
Although the evolutionary significance of the early-diverging flowering plant Amborella (Amborella trichopoda Baill.) is widely recognized, its metabolic landscape, particularly specialized metabolites, is currently underexplored.
Chang, Lijing   +3 more
core   +1 more source

Halogenated Indole Alkaloids from Marine Invertebrates

open access: yesMarine Drugs, 2010
This review discusses the isolation, structural elucidation, and biological activities of halogenated indole alkaloids obtained from marine invertebrates.
Ana Helena Januário   +6 more
doaj   +1 more source

Indole diterpenoid natural products as the inspiration for new synthetic methods and strategies. [PDF]

open access: yes, 2017
Indole terpenoids comprise a large class of natural products with diverse structural topologies and a broad range of biological activities. Accordingly, indole terpenoids have and continue to serve as attractive targets for chemical synthesis.
Corsello, Michael A   +2 more
core   +1 more source

Monoterpene indole alkaloids with anticancer activity from Tabernaemontana species

open access: yesPhytochemistry Reviews
Indole alkaloids, predominantly found in plants, are a large group of natural product-derived compounds characterized by a remarkable chemical diversity associated with significant biological properties.
Bruno M. F. Gonçalves   +5 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy