Pictet-Spengler Reaction Revisited: Engineering of Tetherd Biheterocycles into Annulated Polyheterocycles

Author(s): Bijoy Kundu , Piyush K. Agarwal , Sudhir K. Sharma , Devesh Sawant , Anil K. Mandadapu , Mohammad Saifuddin , Sahaj Gupta .

Journal Name: Current Organic Synthesis

Volume 9 , Issue 3 , 2012

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Abstract:

This micro review focuses on the application of the modified Pictet-Spengler reaction to the synthesis of diverse polyheterocycles with structural resemblance to natural products. The modified Pictet-Spengler reaction takes use of tethered biheterocycles comprising nucleophilic partner and a source for electrophilic partner followed by their condensation with aldehydes/ketones to furnish annulated polyheterocycles. Using this strategy engineering of numerous tethered biheterocycles into annulated polyheterocycles has been successfully carried out using both 6-endo as well as 7-endo cyclizations.

Keywords: Pictet-Spengler reaction, 6-endo cyclization, 7-endo cyclization, Polyheterocycles

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Article Details

VOLUME: 9
ISSUE: 3
Year: 2012
Page: [357 - 376]
Pages: 20
DOI: 10.2174/157017912801270559
Price: $58

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