Progress in the synthesis of canthine alkaloids and ring-truncated congeners

HDH Showalter - Journal of natural products, 2013 - ACS Publications
The canthines represent a fairly large subclass of β-carboline alkaloids, with the first
members described 75 years ago. Over the last 60 years, many members of the parent …

InCl3 and In (OTf) 3 catalyzed reactions: synthesis of 3-acetyl indoles, bis-indolylmethane and indolylquinoline derivatives

R Nagarajan, PT Perumal - Tetrahedron, 2002 - Elsevier
Indium trichloride and indium triflate were found to be effective catalysts for the acetylation of
indoles to 3-acetyl indoles and is reported for the first time in good yield. Indium triflate is …

Fruitful decades for canthin-6-ones from 1952 to 2015: Biosynthesis, chemistry, and biological activities

J Dai, N Li, J Wang, U Schneider - Molecules, 2016 - mdpi.com
In this review, more than 60 natural canthin-6-one alkaloids and their structures are
considered. The biosynthesis, efficient and classic synthetic approaches, and biological …

Indole and Isatin Oximes: synthesis, reactions, and biological activity.

E Abele, R Abele, O Dzenitis, E Lukevics - Chemistry of Heterocyclic …, 2003 - Springer
Data on methods for the production of isatin and indole aldoximes, ketoximes, and
amidoximes and their reactions are reviewed. Individual syntheses of new heterocycles from …

Visible-light-irradiated cascade reaction of indole-tethered alkenes to access tetracyclic tetrahydro-γ-carbolines

H Mei, A Liu, J He, Y Yu, J Han - Organic Letters, 2022 - ACS Publications
A series of indole-derived alkenes have been designed and applied in a photocatalytic
cascade reaction with bromodifluoroacetate esters, affording an unknown type of tetracyclic …

Synthesis of β-and γ-carbolines by the palladium/copper-catalyzed coupling and cyclization of terminal acetylenes

H Zhang, RC Larock - The Journal of Organic Chemistry, 2002 - ACS Publications
A variety of 3-substituted β-and γ-carbolines have been synthesized from N-substituted 3-
iodoindole-2-carboxaldehydes and 2-bromoindole-3-carboxaldehydes, respectively. The …

Synthesis of β- and γ-Carbolines by the Palladium-Catalyzed Iminoannulation of Internal Alkynes

H Zhang, RC Larock - Organic Letters, 2001 - ACS Publications
A variety of substituted β-and γ-carbolines have been prepared in good to excellent yields
by the annulation of internal acetylenes by the tert-butylimines of N-substituted 3-iodoindole …

L-Proline catalyzed synthesis of densely functionalized pyrido [2, 3-d] pyrimidines via three-component one-pot domino Knoevenagel aza-Diels–Alder reaction

S Samai, GC Nandi, S Chowdhury, MS Singh - Tetrahedron, 2011 - Elsevier
Highly functionalized hitherto unreported pyrido [2, 3-d] pyrimidines have been concisely
synthesized in good yields via l-proline catalyzed one-pot three-component domino …

Total synthesis of the rubrolone aglycon

DL Boger, S Ichikawa, H Jiang - Journal of the American Chemical …, 2000 - ACS Publications
A total synthesis of the rubrolone aglycon is detailed and is based on two key Diels− Alder
reactions. The AB ring system incorporating a tetrasubstituted pyridine was assembled …

Synthesis of natural product-like polyheterocycles via one-pot cascade oximation, C–H activation, and alkyne annulation

L Zheng, Y Bin, Y Wang, R Hua - The Journal of Organic …, 2016 - ACS Publications
An efficient protocol for the direct transformation of chroman-4-ones to tricyclic fused
pyridines with the skeleton of cassiarins, a family of alkaloids with antimalarial activity, was …