Results 31 to 40 of about 2,045 (191)
Crystal structure of diethyl 3,3′-[(2,4-dichlorophenyl)methylidene]bis(1H-indole-2-carboxylate)
Acta Crystallographica Section E: Crystallographic Communications, 2017 In the title compound, C29H24Cl2N2O4, the mean planes of the two indole ring systems (r.m.s. deviations = 0.1249 and 0.0075 Å) are approximately perpendicular to one another, with a dihedral angle of 80.9 (5)° between them.
Yu-Long Li +4 more
doaj +1 more source
Marine Drugs, 2022 The invasive macroalga Caulerpa cylindracea has spread widely in the Mediterranean Sea, becoming a favorite food item for native fish for reasons yet unknown.
Valentina Schiano +15 more
doaj +1 more source
Synthesis of New Methoxy Actived Mono and Bis-indole Compounds
Hittite Journal of Science and Engineering, 2022 An indole hydrazone has successfully been synthesized employing Schiff base reaction conditions starting from 4,6-dimethoxy-2,3-diphenylindole-7-carbaldehyde with hydrazine hydrate.
Hakan Kandemir
doaj +1 more source
A new approach for the synthesis of bisindoles through AgOTf as catalyst
Beilstein Journal of Organic Chemistry, 2014 A novel approach for the catalyzed formation of bisindolylmethane derivatives (BIMs) is described. This methodology is the unique example where AgOTf has been successfully used for the activation of aldehydes, giving easy access to a broad range of ...
Jorge Beltrá +2 more
doaj +1 more source
Applied Microbiology, 2023 Heterocyclic compounds can specifically regulate bacterial development by targeting specific bacterial enzymes and metabolic pathways. The ESKAPE pathogens are multidrug-resistant and cause nosocomial infections, which is one of the greatest challenges ...
Lisha K. Poonacha +12 more
doaj +1 more source
Microorganisms, 2019 The antimicrobial activity of the marine bisindole alkaloid 2,2-bis(6-bromo-3-indolyl) ethylamine (1) and related synthetic analogues (compounds 2⁻8) against target microorganisms was investigated by Minimum Inhibitory Concentration (MIC ...
Raffaella Campana +3 more
doaj +1 more source
Bioactive Bis(indole) Alkaloids from a Spongosorites sp. Sponge
Marine Drugs, 2020 Six new bis(indole) alkaloids (1–6) along with eight known ones of the topsentin class were isolated from a Spongosorites sp. sponge of Korea. Based on the results of combined spectroscopic analyses, the structures of spongosoritins A–D (1–4) were ...
Jae Sung Park +9 more
doaj +1 more source
Antemitotic activity of strychnopentamine, a bisindolic alkaloid
Journal of Ethnopharmacology, 1984 Strychnopentamine has been tested for its cytotoxic and antitumor activities and compared with two other bisindolic alkaloids that possess an usambarane skeleton. The presence of a N-methylpyrrolidine group increases the antimitotic activity of this type of alkaloids.
Tits, Monique +4 more
openaire +3 more sources
Cloning and Overexpression of Strictosidine β-D-Glucosidase Gene Short Sequence from Catharanthus roseus in Escherichia coli [PDF]
Advanced Pharmaceutical Bulletin, 2019 Purpose: Strictosidine-β-D-glucosidase (SGD) is considered as a key enzyme in the production of bisindole alkaloids in Catharanthus roseus. The present study illustrated the production of a short sequence of this enzyme in Escherichia coli without codon ...
Ahmed Saeed Arafa +4 more
doaj +1 more source
Oxidative Rearrangements of the Alkaloid Intermediate Geissoschizine
Angewandte Chemie, Volume 137, Issue 24, June 10, 2025.19E‐geissoschizine is a key precursor in the biosynthesis of monoterpene indole alkaloids such as strychnine, ibogaine, and vinblastine. Using enzymatic assays and gene silencing, three CYPs were identified from C. roseus that oxidize this compound to four alkaloid scaffolds: strychnos, sarpagan, akuammiline, and mavacurane. Mutational analysis reveals
Mohamed O. Kamileen +6 more
wiley +2 more sources