Results 61 to 70 of about 229,143 (305)
Total Synthesis of the Spirocyclic Bis‐Indole Alkaloid (−)‐Owerreine via a [4+2] Annulation
Angewandte Chemie, EarlyView.The total synthesis of the bis‐indole alkaloid (−)‐owerreine has been accomplished by a diastereoselective [4+2] annulation between an enamine and an α,β−unsaturated indolenine precursor to form the 3‐spirocyclic tetrahydropyridine linkage of the natural product. DFT calculations allow an understanding of the mechanism of the key annulation.
Elisa Coll +4 more
wiley +2 more sources
The Trypanosoma cruzi enzyme TcGPXI is a glycosomal peroxidase and can be linked to trypanothione reduction by glutathione or tryparedoxin. [PDF]
, 2002 Trypanosoma cruzi glutathione-dependent peroxidase I (TcGPXI) can reduce fatty acid, phospholipid, and short chain organic hydroperoxides utilizing a novel redox cycle in which enzyme activity is linked to the reduction of trypanothione, a parasite ...
Docampo +56 more
core +4 more sources
An Expanding Role For Purine Uptake Permease (PUP) -like Transporters In Plant Secondary Metabolism.
Frontiers in Plant Science, 2012 For the past decade, our understanding of the plant purine uptake permease (PUP) transporter family of was primarily oriented on purine nucleobase substrates and their tissue-specific expression patterns in Arabidopsis.
John G. Jelesko
doaj +1 more source
International Journal of Plant Biology, 2023 Alkaloids are a class of secondary metabolites that play multifaceted roles in plant physiology, including defense mechanisms and interactions with other organisms.
Methat Meechuen +5 more
doaj +1 more source
Marine Drugs, 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. Several marine-derived indoles were found to possess cytotoxic, antineoplastic, antibacterial and antimicrobial activities, in ...
Netz, Natalie, Opatz, Till
openaire +4 more sources
Advanced Science, EarlyView.Multiomics integration analysis reveals the “cystic fluid–tumor cell” metabolic coupling that mediates active choline/ethanolamine uptake of tumor cells from cystic fluid and PC/PE synthesis pathways reprogramming that mediating autophagy pathway activation within ACP. ABSTRACT Adamantinomatous craniopharyngioma (ACP), a benign yet highly recurrent and
Dongting Chen +9 more
wiley +1 more source
Angewandte Chemie, EarlyView.The thiocarbenium ion rearrangement of 3‐dihydrodisorhabdin B greatly increases the recovery of aleutianamine from Latrunculia spp., a pyrroloiminoquinone natural product with potent activity against drug‐resistant cancers, collected from the deep‐ocean along the Aleutian Islands.
Cody F. Dickinson +13 more
wiley +2 more sources
Insights into the Cardiotoxic Effects of Veratrum Lobelianum Alkaloids: Pilot Study
Toxins, 2022 Jervine, protoveratrine A (proA), and protoveratrine B (proB) are Veratrum alkaloids that are presented in some remedies obtained from Veratrum lobelianum, such as Veratrum aqua.
Amir Taldaev +7 more
doaj +1 more source
Hazards to golden-mantled ground squirrels and associated secondary hazard potential from strychnine baiting for forest pocket gophers [PDF]
, 1984 Radio telemetry and capture-recapture techniques were used to evaluate the hazards to golden-mantled ground squirrels (Spermophilus lateralis) from hand baiting with 0.5% strychnine-treated oats for western pocket gophers (Thomomys mazama) on conifer ...
Anthony, R. Michael +2 more
core
Alternative final steps in berberine biosynthesis in Coptis japonica cell cultures [PDF]
, 1988 In Coptis japonica cell cultures an alternative pathway has been discovered which leads from (S)-tetrahydrocolumbamine via (S)-canadine to berberine. The two enzymes involved have been partially purified.
Galneder, E. +4 more
core +1 more source