Results 21 to 30 of about 41,075 (284)

Fluorescent Pyranoindole Congeners: Synthesis and Photophysical Properties of Pyrano[3,2-f], [2,3-g], [2,3-f], and [2,3-e]Indoles

open access: yesMolecules, 2022
This paper reports the synthesis of four types of annulated pyranoindole congeners: pyrano[3,2-f]indole, pyrano[2,3-g]indole, pyrano[2,3-f]indole, and pyrano[2,3-e]indole and photophysical studies in this series.
Ainur D. Sharapov   +11 more
doaj   +1 more source

Synthesis of indoles, indolines, and carbazoles via palladium-catalyzed C–H activation

open access: yesGreen Synthesis and Catalysis, 2021
The construction of indole, indoline and carbazole heterocycles has been of significant interest in the synthetic community over the last century due to their prevalence in natural products and other biologically active compounds.
Alexander J. Rago, Guangbin Dong
doaj   +1 more source

Programmable Deuteration of Indoles via Reverse Deuterium Exchange

open access: yes, 2023
Methods for selective deuterium incorporation into drug-like molecules have become extremely valuable due to the commercial, mechanistic, and biological importance of deuterated compounds.
Greener, Andrew   +3 more
core   +1 more source

Sesquiterpenyl indoles

open access: yesNatural Product Reports, 2013
The natural product sesquiterpenyl indoles are structural hybrids from farnesyl pyrophosphate and tryptophan or its precursors, often with unusual and complex structural features, many of them with interesting biological activities. In this review the compounds of this class known until now are classified, a biosynthetic approach of each group is ...
Marcos, Isidro S.   +4 more
openaire   +3 more sources

New Approaches to Indoles and Indole Alkaloids [PDF]

open access: yesProceedings of the 14th Brazilian Meeting on Organic Synthesis Proceedings, 2013
Second only to pyridines, indoles are among the most common aromatic scaffolds present in bioactive molecules. The 5-hydroxy indole moiety alone has currently >10,500 substructure hits Among the many indole-containing alkaloid scaffolds, ergot alkaloids comprise a notable group of natural products of great biological activities. The striking biological
Peter Wipf, Filip Petronijevic
openaire   +1 more source

Regioselectivity of the SEAr-based cyclizations and SEAr-terminated annulations of 3,5-unsubstituted, 4-substituted indoles

open access: yesBeilstein Journal of Organic Chemistry, 2022
Indole-3,4- and 4,5-fused carbo- and heterocycles are ubiquitous in bioactive natural products and pharmaceuticals, and hence, a variety of synthetic approaches toward such compounds have been developed.
Jonali Das, Sajal Kumar Das
doaj   +1 more source

Undirected, Pd-catalysed deuteration of indoles with programmable regioselectivity

open access: yes, 2022
Methods for selective deuterium-incorporation into drug-like molecules have become extremely valuable due to the commercial and biological importance of deuterated compounds.
Rachael, McNulty   +3 more
core   +1 more source

Umpolung of Indoles: Triflic Acid-Mediated C3-Regioselective Hydroarylation of N-H Indoles

open access: yes, 2022
The direct dearomative addition of arenes to the C3-position of unprotected indoles is reported under operationally simple condi-tions, using triflic acid at room temperature.
Vincent, Gandon   +4 more
core   +1 more source

Bufotenidinium iodide

open access: yesIUCrData, 2021
The title compound, 5-hydroxy-N,N,N-trimethyltryptammonium (5-HTQ) iodide {systematic name: [2-(5-hydroxy-1H-indol-3-yl)ethyl]trimethylazanium iodide}, C13H19N2O+·I−, has a single tryptammonium cation and one iodide anion in the asymmetric unit. The ions
Duyen N. K. Pham   +3 more
doaj   +1 more source

Synthesis and X-ray Crystal Structure Analysis of Substituted 1,2,4-Triazolo [4’,3’:2,3]pyridazino[4,5-b]indole and Its Precursor

open access: yesCrystals, 2023
The hit compound 1,2,4-triazolo[4’,3’:2,3]pyridazino[4,5-b]indole 3 was synthesized from the reflux of 4-amino-5-indolyl-1,2,4-triazole-3-thione 1 with 4′-bromoacetophenone 2 in methanol catalyzed by concentrated HCl and the desired final molecule was ...
Ahmed T. A. Boraei   +5 more
doaj   +1 more source

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