Results 21 to 30 of about 41,236 (276)

Recent Developments in Ultrasound-Promoted Aqueous-Mediated Greener Synthesis of Biologically Vital Indole Derivatives

open access: yesSynOpen, 2023
The extensive range of uses of N-heterocycles as potent bioactive motifs has attracted researchers to expand newer methods for their efficient synthesis. Particularly, indoles are widely known for their prevalent pharmacological properties.
Kanaram Choupra   +4 more
doaj   +1 more source

Marine Indole Alkaloids [PDF]

open access: yesMarine 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

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

Oxidative rearrangement of indoles to oxindoles [PDF]

open access: yes, 2012
An unexpected oxidative rearrangement was observed when indoles substituted with 2-hydroxymalonates were subjected to typical iodination conditions.
Rodriguez, Arantxa   +2 more
core   +1 more source

Data for the lipase catalyzed synthesis of cyano-containing multi-substituted indoles

open access: yesData in Brief, 2021
The data presented here are related to the research paper entitled “Efficient Synthesis of Cyano-containing Multi-substituted Indoles Catalyzed by Lipase” [1].
Fengxi Li   +5 more
doaj   +1 more source

Direct C3-functionalization of indoles with alpha-heteroaryl-substituted methyl alcohols via a metal-free hydrogen autotransfer-type reaction [PDF]

open access: yes, 2023
The transition metal-free Cs2CO3/oxone®-mediated C3-alkylation of indoles proceeds in moderate to high yields with a variety of C4–C7 functionalized indoles and is applicable to 2-, 3- and 4-hydroxymethyl pyridines and related electron-deficient ...
Ethan, Pazur   +2 more
core   +1 more source

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

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

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

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