top of page

40.  Enantioselective Michael Addition of Aldehydes to β‐Nitrostyrenes Catalyzed by (S)‐N‐(D‐Prolyl)‐1‐triflicamido‐3‐phenylpropan‐2‐amine, A. B. Gorde, R. Ramapanicker, Eu. J. Org. Chem. 2019, 29, 4745.


39. Synthesis of peptides containing oxo amino acids and their crystallographic analysis, M. Kalita, A. Dimri, A. Archana, P. G. vasudev, R. Ramapanicker, J Pep Sci. 2019 ASAP.


38. D-prolyl-2-(trifluoromethylsulfonamidopropyl)pyrrolidine: An Organocatalyst for Asymmetric Michael Addition of Aldehydes to β-Nitroalkenes at Ambient Conditions, A. B. Gorde, R. Ramapanicker, J. Org. Chem. 2019, 84, 1523.

37. Enantioselective Synthesis of ( R )-Antofine and ( R )-Cryptopleurine, A. Ansari, R. Ramapanicker, ChemistrySelect  2018, 3, 12591.

36. Selection of Adlayer Patterns of 1,3-Dithia Derivatives of Ferrocene by the Nature of Solvent, P. Saha, V. Gurunarayana, V. Korolkov, P. G. Vasudev, R. Ramapanicker, P. H. Beton, T. G. Gopakumar, J. Phys. Chem. C. 2018, 122, 19067.


35. Enantioselective Synthesis of 2-Aminomethyl and 3-Amino Pyrrolidines and Piperidines through 1,2-Diamination of Aldehydes, A. Ansari, R. Ramapanicker,  J. Org. Chem. 2018, 83, 8161.


34. A Bromo-Capped Diruthenium(I,I) N-Heterocyclic Carbene Compound for in situ Bromine Generation with NBS: Catalytic Olefin Aziridination Reactions, G. Sengupta, P. Pandey, S. Dey, R. Ramapanicker, J. K. Bera, Dalton Trans. 2018, 47, 11917.


33. Diastereoselective synthesis of D-threo-sphinganine, L-erythro-sphinganine and (−)-spisulosine through asymmetric α-hydroxylation of a higher homologue of Garner's aldehyde, V. Jain, R. Ramapanicker, Tetrahedron, 2017,73, 1568.



32. Click Chemistry Route to the Synthesis of Unusual Amino Acids, Peptides, Triazole-Fused Heterocycles and Pseudodisaccharides, R. Ramapanicker  S. Chandrasekaran, The Chemical Record 2017, 17, 63.

31. Diastereoselective synthesis of furanose and pyranose substituted glycine and alanine derivatives via proline-catalyzed asymmetric α-amination of aldehydes, R. Petakamsetty, A. Ansari, R. Ramapanicker, Carbohydrate. Res, 2016, 435, 37.

30. Synthesis of 1-Deoxy-8,8a–di–epi–castanospermine,1-Deoxy-6,7,8a–tri–epi–castanospermine and Formal Synthesis of Pumilotoxin 251D, S. Chacko and R.  Ramapanicker, Chemistry Select, 2016, 1, 4458.

29. Stereoselective Synthesis of Hydroxy Diamino Acid Derivatives and the Caprolactam unit of Bengamide A via Organocatalytic -Hydroxylation and Reductive Amination of Aldehydes, A. T. Philip, E. Raju, R. Ramapanicker. Eur. J. Org. Chem, 2016, 5502.



28. Controlling growth to one dimension in nanoislands of ferrocene-sugar derivatives, P. Saha, K. Yadav, S. Chacko, A. T. Philip, R. Ramapanicker, T. G. Gopakumar. J. Phys. Chem. C, 2016,120, 9223



27.  Enantiospecific Synthesis of (–)-Cuspareine and (–)-Galipinine, S. Chacko, R. Ramapanicker,. J. Heterocyclic Chem., 2015, 52, 1902



26. Click chemistry route to covalently link cellulose and clay, P. Yadav, S. Chacko, G. Kumar, R. Ramapanicker, V. Verma. Cellulose, 2015, 22, 1615.



25. Synthesis of stable C-linked ferrocenyl amino acids and their use in solution phase peptide synthesis, A. T. Philip, S. Chacko, R. Ramapanicker. J. Pept. Sci. 2015, 21, 887



24. Divergent synthesis of various iminocyclitols from D-ribose, R. Petakamsetty, V. K. Jain, P. K. Majhi, R. RamapanickerOrg. Biomol. Chem. 2015, 13, 8512.



23. Chelation controlled reduction of N-protected β-amino ketones toward the synthesis of HPA-12 and analogues, S. Chacko, M. Kalita, R. Ramapanicker. Tetrahedron Asymm. 2015, 26, 623.



21. Proline catalyzed, one-pot three component Mannich reaction and sequential cyclization toward the synthesis of 2-substituted piperidine and pyrrolidine alkaloids, S. Chacko, R. Ramapanicker. Tetrahedron Lett, 2015, 56, 2023.



20. Diastereoselective synthesis of 1-deoxygalactonojirimycin, 1-deoxyaltronojirimycin, and N-Boc-(2S,3S)-3-hydroxypipecolic acid via proline catalyzed α-aminoxylation of aldehydes, S. Chacko, R. Ramapanicker.J. Org. Chem. 2015, 80, 4776



19. Synthesis of bis-a-amino acids through proline catalyzed asymmetric a-amination of higher homologs of Garner’s aldehyde.  Ramu Petakamsetty, Ram Pada Das, Ramesh Ramapanicker. Tetrahedron. 2014, 70, 9554



18A Highly Efficient Catalyst for Selective Oxidative Scission of Olefins to Aldehydes:Abnormal-NHC—Ru (II) Complex in Oxidation Chemistry. P. Daw, R.  Petakamsetty, A. Sarbajna,  S. Laha , R. Ramapanicker, and J. K. Bera. J. Am. Chem. Soc. 2014, 136, 13987



17. Powerful Binders for the D-Dimer by Conjugation of the GPRP Peptide to Polypeptides from a Designed Set--Illustrating a General Route to New Binders for Proteins, R. Ramapanicker, X. Sun, J. Vijanen, L. Baltzer, Bioconjugate Chem. 2013, 24, 17.



16. Unusual reactions of the 1,3-dithiane derivative of the garner aldehyde and related compounds, A. T. Philip, S. Chacko, R. Ramapanicker. Synthesis 2013, 45, 1997.



15Synthesis of γ-oxo γ-aryl and γ-aryl α-amino acids from aromatic aldehydes and serine, S. Chacko, R. RamapanickerEur. J. Org. Chem. 2012, 36, 7120


14. Applications of propargyl esters of amino acids in solution-phase peptide synthesis. R. Ramapanicker, R. Gupta, M. Rajendran, S. Chandrasekaran, Int. J. Peptides, 2011, 854952.



13. Powerful Protein Binders from Designed Polypeptides and Small Organic Molecules-A General Concept for Protein Recognition. L. T. Tegler, L. Baltzer et al. Angew. Chem. Int. Ed. 2011, 50, 1823.



12. Propargyl Chloroformate. Ramapanicker Ramesh and Srinivasan Chandrasekaran, Encyclopedia of Reagents for Organic SynthesisJohnWiley and Sons, DOI: 10.1002/047084289X.rn00816.



11. An improved procedure for the synthesis of dehydroamino acids and dehydropeptides from the carbonate derivatives of serine and threonine using tetrabutylammonium fluoride. R. Ramapanicker, R. Mishra, S. Chandrasekaran. J. Pept. Sci. 2010, 16, 123.



10. Development and characterization of lysine based tripeptide analogues as inhibitors of Sir2 activity. S. P. Chakrabarty, R. Ramapanicker, R. Mishra, S. Chandrasekaran. Bioorg. Med. Chem. 2009, 17, 8060.



9. One-pot protection and activation of amino acids using pentafluorophenyl carbonates. R. Ramapanicker, N. B. R. Baig, K. De, S. Chandrasekaran. J. Pept. Sci. 2009, 15, 849-855.



8. Propargyloxycarbonyl as a protecting group for the side chains of serine,threonine and tyrosine. R. Ramesh, K. De, S. Gupta, S. Chandrasekaran. J. Chem. Sci. 2008, 120, 163.



7. An efficient synthesis of dehydroamino acids and dehydropeptides from O-Cbz and O-Eoc derivatives of serine and threonine. R. Ramesh, K. De, S. Chandrasekaran, Tetrahedron 2007, 63, 10534



6. Base catalyzed cyclization of N-aryl and N-alkyl propargyl carbamates to 4-alkylidene-2-oxazolidinones. R. Ramesh, Y. Chandrasekaran, R.Megha, S. Chandrasekaran. Tetrahedron 2007, 63, 9153.



5. Chemistry of thio- and selenolevoglucosans. R. Ramesh, P. R. Sridhar, S. Chandrasekaran. Proc. Ind. Nat. Sci. Acad. Part A: Phy. Sci. 2005, 71,237.



4. Simultaneous protection and activation of amino acids usingpropargylpentafluorophenyl carbonate. R. Ramesh, S. Rajasekaran, R. Gupta, S. Chandrasekaran. Org. Lett. 2006, 8, 1933.



3. But-2-ynylbisoxycarbonyl chloride: A novel C2-symmetric protecting group for the protection of amines and amino acids. R. Ramesh, S.Chandrasekaran. Org. Lett. 2005, 7, 4947.



2. Highly selective deblocking of propargyl carbonates in the presence of propargyl carbamates with tetrathiomolybdate. R. Ramesh, R. G. Bhat, S. Chandrasekaran. J. Org. Chem. 2005, 70, 837.



1. An efficient multicomponent reaction involving the interception of the zwitterionic intermediate between DMAD and isocyanides with some active methylene compounds. V. Nair, A. U. Vinod, R. Ramesh, R. S. Menon, R. L. Varma, S. Mathew, A. Chiaroni. Heterocycles, 2002, 58,147.

bottom of page