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Nagai D, Shmizu N, Takahashi R, Yoneyama M, Yamanobe T. Innovation new route for preparation of polyacrylamide bearing urethane group based on one-pot Curtius rearrangement. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04305-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Khatavi SY, Kantharaju K. Eco-Friendly Synthesis of Peptides Using Fmoc-Amino Acid Chlorides as Coupling Agent Under Biphasic Condition. Protein Pept Lett 2021; 28:699-707. [PMID: 33213309 DOI: 10.2174/0929866527666201119161116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 10/03/2020] [Accepted: 10/15/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Agro-waste derived solvent media act as a greener process for the peptide bond formation using Nα-Fmoc-amino acid chloride and amino acid ester salt with in situ neutralization and coupling under biphasic condition. The Fmoc-amino acid chlorides are prepared by the reported procedure of freshly distilled SOCl2 with dry CH2Cl2. The protocol found many added advantages such as neutralization of amino acid ester salt and not required additional base for the neutralization, and directly coupling take place with Fmoc-amino acid chloride gave final product dipeptide ester in good to excellent yields. The protocol occurs with complete stereo chemical integrity of the configuration of substrates. Here, we revisited Schotten-Baumann condition, instead of using inorganic base. OBJECTIVE To develop green protocol for the synthesis of peptide bond using Fmoc-amino acid chloride with amino acid esters salt. METHODS The final product isolated is analyzed in several spectroscopic and analytical techniques such as FT-IR, 1H-, 13C-NMR, Mass spectrometry and RP-HPLC to check stereo integrity and purity of the product. CONCLUSION The present method developed greener using natural agro-waste (lemon fruit shell ash) derived solvent medium for the reaction and not required chemical entity.
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Affiliation(s)
- Santosh Y Khatavi
- Department of Chemistry, Peptide and Medicinal Chemistry Research Laboratory, Rani Channamma University, Belagavi, P-B, NH-4, Karnataka, 591156, India
| | - Kamanna Kantharaju
- Department of Chemistry, Peptide and Medicinal Chemistry Research Laboratory, Rani Channamma University, Belagavi, P-B, NH-4, Karnataka, 591156, India
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Srinivasulu C, Sagar NR, Vishwanatha TM, Durgamma S, Sureshbabu VV. Synthesis of N β-Protected Amino Sulfenyl Methyl Formamides and Sulfonyl Methyl Formamides: A Simple Protocol. ACS OMEGA 2021; 6:4680-4686. [PMID: 33644575 PMCID: PMC7905828 DOI: 10.1021/acsomega.0c05419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 01/22/2021] [Indexed: 06/12/2023]
Abstract
Chiral amino acid-derived formamides represent one of the most versatile components in multicomponent reactions. Herein, we describe a facile synthesis of Nβ-protected amino sulfenyl methyl formamides and sulfonyl methyl formamides via the Mannich reaction of Nα-protected amino alkyl thiols followed by oxidation using 3-chloroperbenzoic acid (m-CPBA). This protocol is applicable to a wide range of Fmoc- and Cbz-protected amino acids. Notably, the reaction provides high yield and retains the stereochemistry of the chiral center of the starting component.
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Chen Z, Cao Y, Tian Z, Zhou X, Xu W, Yang J, Teng H. An efficient reduction of N -substituted carbonylimidazolides into formamides by NaBH 4. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.04.072] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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A mild removal of Fmoc group using sodium azide. Amino Acids 2013; 46:367-74. [PMID: 24306456 DOI: 10.1007/s00726-013-1625-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Accepted: 11/13/2013] [Indexed: 01/19/2023]
Abstract
A mild method for effectively removing the fluorenylmethoxycarbonyl (Fmoc) group using sodium azide was developed. Without base, sodium azide completely deprotected N (α)-Fmoc-amino acids in hours. The solvent-dependent conditions were carefully studied and then optimized by screening different sodium azide amounts and reaction temperatures. A variety of Fmoc-protected amino acids containing residues masked with different protecting groups were efficiently and selectively deprotected by the optimized reaction. Finally, a biologically significant hexapeptide, angiotensin IV, was successfully synthesized by solid phase peptide synthesis using the developed sodium azide method for all Fmoc removals. The base-free condition provides a complement method for Fmoc deprotection in peptide chemistry and modern organic synthesis.
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Verardo G, Gorassini A. Sodium Borohydride Reduction of Carbamoyl Azide Function: A Synthesis of N-Protected N′-Formyl- gem-diaminoalkyl Derivatives. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300442] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Gody G, Rossner C, Moraes J, Vana P, Maschmeyer T, Perrier S. One-pot RAFT/"click" chemistry via isocyanates: efficient synthesis of α-end-functionalized polymers. J Am Chem Soc 2012; 134:12596-603. [PMID: 22731785 DOI: 10.1021/ja3030643] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A new methodology has been developed for preparing α-functional polymers in a one-pot simultaneous polymerization/isocyanate "click" reaction. Our original synthetic strategy is based on the preparation of a carbonyl-azide chain transfer agent (CTA) precursor that undergoes the Curtius rearrangement in situ during reversible addition-fragmentation chain transfer (RAFT) polymerization yielding well-controlled α-isocyanate modified polymers. This strategy overcomes numerous difficulties associated with the synthesis of a polymerization mediator bearing an isocyanate at the R group and with the handling of such a reactive functionality. This new carbonyl-azide CTA can control the polymerization of a wide range of monomers, including (meth)acrylates, acrylamides, and styrenes (M(n) = 2-30 kDa; Đ = 1.16-1.38). We also show that this carbonyl-azide CTA can be used as a universal platform for the synthesis of α-end-functionalized polymers in a one-pot RAFT polymerization/isocyanate "click" procedure.
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Affiliation(s)
- Guillaume Gody
- Key Centre for Polymers & Colloids, School of Chemistry, The University of Sydney, New South Wales 2006, Sydney, Australia
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Narendra N, Vishwanatha T, Nagendra G, Sureshbabu VV. Chiral Nβ-Fmoc-amino alkyl isonitriles in Ugi-4CR: an assembly of novel 1,1′-iminodicarboxylated peptidomimetics. Tetrahedron 2012. [DOI: 10.1016/j.tet.2011.12.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Hemantha HP, Sureshbabu VV. Isoselenocyanates derived from amino acid esters: an expedient synthesis and application to the assembly of selenoureidopeptidomimetics, unsymmetrical Selenoureas and selenohydantoins. J Pept Sci 2010; 16:644-51. [DOI: 10.1002/psc.1276] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Sureshbabu VV, Naik SA. Synthesis of N α -Protected Amino Acid–Derived Selenocarbamates Employing Isocyanates as Key Intermediates. SYNTHETIC COMMUN 2010. [DOI: 10.1080/00397910903318641] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Vommina V. Sureshbabu
- a Peptide Research Laboratory, Department of Studies in Chemistry , Central College Campus, Bangalore University , Bangalore, India
| | - Shankar A. Naik
- a Peptide Research Laboratory, Department of Studies in Chemistry , Central College Campus, Bangalore University , Bangalore, India
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Basavaprabhu, Narendra N, Lamani RS, Sureshbabu VV. T3P® (propylphosphonic anhydride) mediated conversion of carboxylic acids into acid azides and one-pot synthesis of ureidopeptides. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.04.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Sureshbabu VV, Lalithamba HS, Narendra N, Hemantha HP. New and simple synthesis of acid azides, ureas and carbamates from carboxylic acids: application of peptide coupling agents EDC and HBTU. Org Biomol Chem 2010; 8:835-40. [DOI: 10.1039/b920290k] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Sureshbabu VV, Naik SA, Hemantha HP, Narendra N, Das U, Guru Row TN. N-Urethane-Protected Amino Alkyl Isothiocyanates: Synthesis, Isolation, Characterization, and Application to the Synthesis of Thioureidopeptides. J Org Chem 2009; 74:5260-6. [DOI: 10.1021/jo900675s] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vommina V. Sureshbabu
- Peptide Research Laboratory, Department of Studies in Chemistry, Central College Campus, Bangalore University, Dr. B. R. Ambedkar Veedhi, Bangalore 560 001, India
| | - Shankar A. Naik
- Peptide Research Laboratory, Department of Studies in Chemistry, Central College Campus, Bangalore University, Dr. B. R. Ambedkar Veedhi, Bangalore 560 001, India
| | - H. P. Hemantha
- Peptide Research Laboratory, Department of Studies in Chemistry, Central College Campus, Bangalore University, Dr. B. R. Ambedkar Veedhi, Bangalore 560 001, India
| | - N. Narendra
- Peptide Research Laboratory, Department of Studies in Chemistry, Central College Campus, Bangalore University, Dr. B. R. Ambedkar Veedhi, Bangalore 560 001, India
| | - Ushati Das
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India
| | - Tayur N. Guru Row
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India
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Sureshbabu VV, Narendra N, Nagendra G. Chiral N-Fmoc-β-Amino Alkyl Isonitriles Derived from Amino Acids: First Synthesis and Application in 1-Substituted Tetrazole Synthesis. J Org Chem 2008; 74:153-7. [DOI: 10.1021/jo801527d] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vommina V. Sureshbabu
- Peptide Research Laboratory, Department of Studies in Chemistry, Central College Campus, Bangalore University, Dr. B. R. Ambedkar Veedhi, Bangalore 560 001, India
| | - N. Narendra
- Peptide Research Laboratory, Department of Studies in Chemistry, Central College Campus, Bangalore University, Dr. B. R. Ambedkar Veedhi, Bangalore 560 001, India
| | - G. Nagendra
- Peptide Research Laboratory, Department of Studies in Chemistry, Central College Campus, Bangalore University, Dr. B. R. Ambedkar Veedhi, Bangalore 560 001, India
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Sureshbabu VV, Narendra N. Synthesis of N-Z, N′-Formyl α-Amino Acid Derived Gem-Diamines. Int J Pept Res Ther 2008. [DOI: 10.1007/s10989-008-9127-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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