Choline chloride based eutectic solvents: direct C-3 alkenylation/alkylation of indoles with 1,3-dicarbonyl compounds
作者:Anita Kailas Sanap、Ganapati Subray Shankarling
DOI:10.1039/c4ra05858e
日期:——
C-3 alkenylation/alkylation of indoles depends on the position of the substituent on the indole used in the reaction. C-2 substituted indole results in the formation of C-3 alkenylated indole derivatives, whereas plain indole gives rise to the bis(indolyl)carbonyl derivative instead of the C-3 alkenylation product under the same set of reaction conditions. Deep eutectic mixtures are cost-effective
Synthesis of substituted carbazoles via electrocyclization of in situ generated enamines from 1-phenylsulfonyl-2/(3)-methyl-3/(2)-vinylindoles and DMF·DMA/DMA·DMA
作者:Radhakrishnan Sureshbabu、Ramalingam Balamurugan、Arasambattu K. Mohanakrishnan
DOI:10.1016/j.tet.2009.03.010
日期:2009.5
Interaction of 2/(3)-methyl-3/(2)-vinylindoles and DMF center dot DMA/DMA center dot DMA at 110 degrees C led to the in situ generation of enamines, which on concurrent electrocyclization followed by subsequent aromatization afforded substituted carbazoles. (C) 2009 Elsevier Ltd. All rights reserved.
Task-specific ionic liquid-catalyzed efficient couplings of indoles with 1,3-dicarbonyl compounds: an efficient synthesis of 3-alkenylated indoles
作者:Sougata Santra、Adinath Majee、Alakananda Hajra
DOI:10.1016/j.tetlet.2011.05.069
日期:2011.7
Direct alkenylation of indoles at the 3-position with 1,3-dicarbonyl compounds under Bronsted acidic ionic liquid catalysis has been developed. The yields were excellent, and the catalyst can be reused at least six times without noticeable loss of catalytic activity. (C) 2011 Elsevier Ltd. All rights reserved.
Synthetic Studies on Indolocarbazoles: A Facile Synthesis of Staurosporinone Analogues
作者:Potharaju Raju、Ganesan Gobi Rajeshwaran、Arasambattu K. Mohanakrishnan
DOI:10.1002/ejoc.201500939
日期:2015.11
Synthesis of indolocarbazoles was achieved through thermal electrocyclization followed by triethyl phosphite-mediated nitrene insertion reactions. Total synthesis of staurosporinoneanalogues was achieved from commercially available 2-methylindole. The CDK5/p25 kinase inhibition potential of some representative staurosporinoneanalogues was explored by using the TRFRET kinase assay.
Synthetic Studies on Indolocarbazoles: Total Synthesis of Staurosporine Aglycon
作者:Ganesan Gobi Rajeshwaran、Arasambattu K Mohanakrishnan
DOI:10.1021/ol200094b
日期:2011.3.18
A synthesis of staurosporine aglycon and its analogs was achieved in a 28−36% overall yield starting from 2-methylindole. The prominent key steps for the synthesis of the indolocarbazole alkaloids involved electrocyclization and nitrene insertion reactions.