Suresh Vangaru

Publications (20) View all

• Article: Fluorogenic sensing of CH3CO2− and H2PO4− by Ditopic receptor through conformational Change.

  Nisar Ahmed, Vangaru Suresh, Bahareh Shirinfar, Inacrist Geronimo, Amita Bist, In-Chul Hwang, Kwang S. Kim
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  ABSTRACT: Cyclo-bis-(urea-3,6-dichlorocarbazole) (1) forms a 1 : 2 complex with CH3CO2 − and H2PO4 − through hydrogen bonding with the two urea moieties, resulting in fluorescence enhancement via a combined photoinduced electron transfer (PET) and energy transfer mechanism. The binding mechanism involves a conformational change of the two urea receptors to a trans orientation after binding of the first anion, which facilitates the second interaction.
  Organic & Biomolecular Chemistry 01/2012; 10:2094-2100. · 3.70 Impact Factor
• Article: Imidazolium-based fluorescent cyclophane for the selective recognition of Iodide.

  Vangaru Suresh, Nisar Ahmed, Il Seung Youn, Kwang S. Kim
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  ABSTRACT: Design and Synthesis of a new imidazolium based fluorescent cyclophane 1, we observed the highly selective fluorescence quenching effect with iodide compare to other anions, which examined using fluorescence, 1H NMR and theoretical calculations and the selectivity mentioned in thermodynamic quantities using the fluorescence titrations.
  Chemistry - An Asian Journal 01/2012; · 4.50 Impact Factor
• Article: A highly selective fluorescent chemosensor for guanosine-50-triphosphate via excimer formation in aqueous solution of physiological pH

  Nisar Ahmed, Bahareh Shirinfar, Il Seung Youn, Amita Bist, Vangaru Suresh, Kwang S. Kim
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  ABSTRACT: A new water-soluble and fluorescent imidazolium-anthracene cyclophane 1 effectively recognizes and differentiates the biologically important GTP and ATP in 100% aqueous solution of physiological pH 7.4. Fluorescence, 1H-NMR spectra and ab initio calculations demonstrate that excimer formation and fluorescence enhancement occur upon GTP and ATP binding, respectively, through (C–H)+� � �A� hydrogen bond interactions.
  Chemical Communications 01/2012; 48:2662–2664. · 6.17 Impact Factor
• Article: First Asymmetric Total Synthesis of (R,E)-1-[4-(3-Hydroxyprop-1-enyl)phenoxyl]-3-methylbutane-2,3-diol

  V. Suresh, K. Rajesh, J. J. P. Selvam, Y. Venkateswarlu
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  ABSTRACT: A new anti-inflammatory active phenylpropenoid, (R,E)-1-[4-(3-hydroxyprop-1- enyl) phenoxyl]-3-methylbutane-2,3-diol, isolated from the stem wood of Zanthoxylum integrifoliolum, has been synthesized for the first time using commercially available 4-hydroxy benzaldehyde. The key step involves the Sharpless asymmetric dihydroxylation of olefin.
  Synthetic Communications 04/2011; 41(7):993-998. · 1.06 Impact Factor
• Article: Stereoselective total synthesis of 11-β-Methoxycurvularin.

  Karuturi Rajesh, Vangaru Suresh, Jondoss Jon Paul Selvam, Dokuburra Chanti Babu, Yenamandra Venkateswarlu
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  ABSTRACT: A simple and highly efficient stereoselective total synthesis of (11b)-11-methoxycurvularin (5), a polyketide natural product, was achieved. The synthesis commenced with a Cu-mediated regioselective opening of (2S)-2-methyloxirane (6) and comprised a Keck asymmetric allylation and intramolecular Friedel – Crafts acylation as key steps
  Helvetica Chimica Acta 01/2010; 93:147-152. · 1.48 Impact Factor