Submitted on: 29 June 2007.
Revised on: 21 October 2007.
Accepted on: 15 December 2007.
___________________Chemistry of Heterocyclic Compounds
Submitted on: 27 October 2013.
Revised on: 24 January 2014.
Accepted on: 02 March 2014.
___________________Chemistry of Heterocyclic Compounds
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Submitted on: 11 May 2004.
Revised on: 10 August 2004.
Accepted on: 24 August 2004.
___________________Chemistry of Heterocyclic Compounds
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Submitted on: 13 February 2011.
Revised on: 01 April 2011.
Accepted on: 08 May 2011.
___________________Chemistry of Heterocyclic Compounds
Submitted on: 30 April 2010.
Revised on: 06 August 2010.
Accepted on: 11 September 2010.
___________________Chemistry of Heterocyclic Compounds
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