Results 61 to 70 of about 31,700 (240)

Indole Alkaloids from the Leaves of Nauclea officinalis

Molecules, 2016
Three new indole alkaloids, named naucleamide G (1), and nauclealomide B and C (5 and 6), were isolated from the n-BuOH-soluble fraction of an EtOH extract of the leaves of Nauclea officinalis, together with three known alkaloids, paratunamide C (2 ...
Long Fan, Cheng-Hui Liao, Qiang-Rong Kang, Kai Zheng, Ying-Chun Jiang, Zhen-Dan He   +5 more
doaj   +1 more source

Molecular Human Targets of Bioactive Alkaloid-Type Compounds from Tabernaemontana cymose Jacq.

Molecules, 2021
Alkaloids are a group of secondary metabolites that have been widely studied for the discovery of new drugs due to their properties on the central nervous system and their anti-inflammatory, antioxidant and anti-cancer activities.
Andrés Oliveros-Díaz, Jesús Olivero-Verbel, Yina Pájaro-González, Fredyc Díaz-Castillo   +3 more
doaj   +1 more source

Phyllobates terribilis [PDF]

, 2012
Number of Pages: 5Integrative BiologyGeological ...
Doan, Tiffany M., Nowacki, Anthony M.
core   +1 more source

1H and 13C-NMR Data of the Simplest Plumeran Indole Alkaloids Isolated from Aspidosperma Species

Molecules, 2012
Indole alkaloids are the chemotaxonomic markers of the Aspidosperma genera. Those that have the simplest plumeran skeleton are classified as the precursors of biosynthetic routes and the intermediates for several synthetic reactions.
Heloisa Alves Guimarães, Ivo José Curcino Vieira, Raimundo Braz-Filho   +2 more
doaj   +1 more source

Two New Indole Alkaloids from Toad Venom of Bufo bufo gargarizans

Molecules, 2020
Two new indole alkaloids, Bufotenidine B (2) and Bufocarboline A (6), along with seven known indole alkaloids (1, 3–5, and 7–9) and three organic acids (10–12), were isolated from the water extract of toad venom.
Yu-Lin Chen, Ying-Hui Dai, An-Dong Wang, Zi-Ying Zhou, Miao Lei, Jiao Liu, Bin Lin, Ming-Yu Xia, Dong Wang   +8 more
doaj   +1 more source

Research on synthesis of microwave‐assisted heterocyclic compounds with eco‐friendly solvents and transition metals via C–H activation

Bulletin of the Korean Chemical Society, EarlyView.
This review summarizes microwave‐assisted transition‐metal catalysis for constructing N‐ and O‐heterocycles, highlighting rapid C–H and pre‐activated C–X activation, improved selectivity, and green synthetic efficiency. Abstract Microwave‐assisted organic synthesis provides a rapid and sustainable platform for synthesizing various heterocycles ...
Woo‐Jin Park, Ye Ri Han, Hyejeong Lee
wiley   +1 more source

Alkaloids Induce Programmed Cell Death in Bloodstream Forms of Trypanosomes (Trypanosoma b. brucei)

Molecules, 2008
The potential induction of a programmed cell death (PCD) in Trypanosoma b. brucei by 55 alkaloids of the quinoline, quinolizidine, isoquinoline, indole, terpene, tropane, steroid, and piperidine type was studied by measuring DNA fragmentation and changes
Michael Wink, Vera Rosenkranz
doaj   +1 more source

Structure units oriented approach towards collective synthesis of sarpagine-ajmaline-koumine type alkaloids

Nature Communications, 2022
The sarpagine-ajmaline-koumine type alkaloids are among the most important groups of monoterpenoid indole alkaloids, having notable biological activity.
Wen Chen, Yonghui Ma, Wenyan He, Yinxia Wu, Yuancheng Huang, Yipeng Zhang, Hongchang Tian, Kai Wei, Xiaodong Yang, Hongbin Zhang   +9 more
doaj   +1 more source

Bifunctional Photocatalysts: Exploiting Proximity for Enhanced Reaction Performance

Chemistry – A European Journal, EarlyView.
This review covers the application of the bifunctional approach to photocatalysis as a means to attain (enhanced) enantioselectivity, and, more in general, as a strategy to enhance the catalytic performance through an effective use of short‐lived reaction intermediates.
Luigi Dolcini, Daniele Lavelli, Alberto Dal Corso, Luca Pignataro   +3 more
wiley   +1 more source

Monosubstituted N‐Arylhydroxylamine Chemistry: Integrating Contemporary Synthetic Approaches for the Efficient Construction of Diverse Heterocyclic Scaffolds

Chemistry – A European Journal, EarlyView.
Monosubstituted N‐arylhydroxylamines represent a unique subclass of hydroxylamines that act as pivotal intermediates in redox transformations and as versatile platforms for further synthetic transformations. They serve as key building blocks in the synthesis of architecturally complex heterocycles and other valuable organic compounds.
Michael G. Kallitsakis, Kyriakos D. Nikopoulos, Ioannis N. Lykakis   +2 more
wiley   +1 more source