Recent advances in the synthesis of biologically active spirooxindoles

MMM Santos - Tetrahedron, 2014 - Elsevier
The spirooxindole system is the core structure of a variety of medicinal agents and natural
products. 1, 2 In fact, spirooxindole derivatives have been described with different biological …

Scaffold Diversity from N-Acyliminium Ions

P Wu, TE Nielsen - Chemical reviews, 2017 - ACS Publications
N-Acyliminium ions are powerful reactive species for the formation of carbon–carbon and
carbon–heteroatom bonds. Strategies relying on intramolecular reactions of N-acyliminium …

An approach to functionalized carbazoles from Z-enoate propargylic alcohols. A unified total synthesis of N-Me-carazostatin, N-Me-carbazoquinocin C and N-Me …

D Roy, P Tharra, B Baire - Chemical Communications, 2022 - pubs.rsc.org
Development of an acid catalyzed, intramolecular benzannulation of indoles for the
synthesis of functionalized carbazoles has been reported. The indole appended Z-enoate …

Brønsted Acid‐Catalyzed Tandem Cyclizations of Tryptamine‐Ynamides Yielding 1H‐Pyrrolo[2,3‐d]carbazole Derivatives

Y Wang, J Lin, X Wang, G Wang… - … A European Journal, 2018 - Wiley Online Library
Ynamides, as versatile synthetic precursors, have attracted much attention from synthetic
chemists and sparked the development of a number of methodologies for the construction of …

A tryptophanol-derived oxazolopiperidone lactam is cytotoxic against tumors via inhibition of p53 interaction with murine double minute proteins

J Soares, L Raimundo, NAL Pereira… - Pharmacological …, 2015 - Elsevier
Inactivation of the p53 tumor suppressor protein by interaction with murine double minute
(MDM) proteins, MDM2 and MDMX, is a common event in human tumors expressing wild …

Diastereoselective Syntheses of Indoloquinolizidines by a Pictet− Spengler/Lactamization Cascade

H Fang, X Wu, L Nie, X Dai, J Chen, W Cao… - Organic …, 2010 - ACS Publications
An expedient diastereoselective synthesis of highly functionalized indolo [2, 3-α]
quinolizidines adopting a cis H2/H12b geometry has been realized by a Pictet− Spengler …

Silver Triflate/N‐Fluorobenzenesulfonimide‐Catalyzed Cycloisomerization of Tryptamine‐Ynamide to Spiro[indoline‐3,4′‐piperidine] Induced by Cation‐π‐π …

G Liang, Y Ji, H Liu, Y Pang, B Zhou… - Advanced Synthesis …, 2020 - Wiley Online Library
Abstract N‐Fluorobenzenesulfonimide (NFSI), one of the most popular fluorinating agents in
organic synthesis, was used as a ligand of silver triflate (AgOTf) to assist the trapping of the …

The progress in the chemistry of N-acyliminium ions and their use in stereoselective organic synthesis

MG Vinogradov, OV Turova… - Russian Chemical …, 2017 - iopscience.iop.org
The review summarizes data published in the last decade on the reactions of organic
compounds involving N-acyliminium ions, including intramolecular arylation (cyclization) …

Enantioselective formal synthesis of ent-rhynchophylline and ent-isorhynchophylline

M Amat, C Ramos, M Pérez, E Molins… - Chemical …, 2013 - pubs.rsc.org
Starting from (S)-tryptophanol, a formal synthesis of ent-rhynchophylline and ent-
isorhynchophylline, involving stereoselective cyclocondensation, spirocyclization, and …

Synthesis of spirocyclic indolines by interruption of the Bischler–Napieralski reaction

JW Medley, M Movassaghi - Organic letters, 2013 - ACS Publications
The development of a versatile method for the synthesis of spirocyclic pyrrolidinoindolines is
discussed. Treatment of N-acyltryptamines with trifluoromethanesulfonic anhydride–2 …