Author

10 article(s) from Misra, Anup Kumar

Synthesis of the tetrasaccharide repeating unit of the O-specific polysaccharide of Azospirillum doebereinerae type strain GSF71^T using linear and one-pot iterative glycosylations

Arin Gucchait,
Pradip Shit and
Anup Kumar Misra

Full Research Paper
Published 15 Jul 2020

PDF
Album
1. Graphical Abstract
2. Figure 1: Structure of the synthesized tetrasaccharide and its synthetic intermediates.
  
  Jump to Figure 1
3. Scheme 1: Stepwise stereoselective synthesis of tetrasaccharide 1. Reagents and conditions: (a) NIS, HClO₄-SiO...
  
  Jump to Scheme 1
4. Scheme 2: Iterative stereoselective three-step one-pot glycosylation. Reaction conditions: (a) NIS, HClO₄-SiO₂...
  
  Jump to Scheme 2
Supp. Info

Beilstein J. Org. Chem. 2020, 16, 1700–1705, doi:10.3762/bjoc.16.141

Full Text

Convenient synthesis of the pentasaccharide repeating unit corresponding to the cell wall O-antigen of Escherichia albertii O4

Tapasi Manna,
Arin Gucchait and
Anup Kumar Misra

Full Research Paper
Published 22 Jan 2020

PDF
Album
1. Graphical Abstract
2. Figure 1: Structure of the pentasaccharide repeating unit corresponding to the cell wall O-antigen of Escheri...
  
  Jump to Figure 1
3. Scheme 1: (a) NIS, HClO₄/SiO₂, MS 4 Å, CH₂Cl₂, −45 °C, 1 h, 79%; (b) 0.1 M CH₃ONa, CH₃OH, room temperature, 2...
  
  Jump to Scheme 1
4. Scheme 2: (a) HClO₄/SiO₂, CH₂Cl₂, −10 °C, 1 h, 76%.
  
  Jump to Scheme 2
5. Scheme 3: (a) NIS, HClO₄/SiO₂, MS 4 Å, CH₂Cl₂, −40 °C, 1 h, 22%.
  
  Jump to Scheme 3
6. Scheme 4: (a) NIS, HClO₄/SiO₂, MS 4 Å, CH₂Cl₂, −45 °C, 1 h, 74%; (b) BnBr, NaOH, TBAB, THF, room temperature,...
  
  Jump to Scheme 4
Supp. Info

Beilstein J. Org. Chem. 2020, 16, 106–110, doi:10.3762/bjoc.16.12

Full Text

Convergent synthesis of the pentasaccharide repeating unit of the biofilms produced by Klebsiella pneumoniae

Arin Gucchait,
Angana Ghosh and
Anup Kumar Misra

Full Research Paper
Published 13 Feb 2019

PDF
Album
1. Graphical Abstract
2. Figure 1: Structure of the synthesized pentasaccharide corresponding to the repeating unit of the biofilms pr...
  
  Jump to Figure 1
3. Scheme 1: Reagents and conditions: (a) i: Bu₂SnO, CH₃OH, 80 °C, 2 h; ii: allyl bromide, CsF, DMF, 65 °C, 6 h;...
  
  Jump to Scheme 1
4. Scheme 2: Reagents and conditions: (a) Benzoyl chloride, pyridine, 0 °C, 3 h, 75%; (b) Tf₂O, BSP, TTBP, CH₂Cl₂...
  
  Jump to Scheme 2
5. Scheme 3: Reagents and conditions: (a) TMSOTf, CH₂Cl₂, −10 °C, 30 min, 45%; (b) NIS, TMSOTf, MS 4 Å, CH₂Cl₂, ...
  
  Jump to Scheme 3
6. Scheme 4: Reagents and conditions: (a) NIS, TMSOTf, MS 4 Å, CH₂Cl₂, −50 °C, 2 h, 70%; (b) benzyl bromide, NaO...
  
  Jump to Scheme 4
Supp. Info

Beilstein J. Org. Chem. 2019, 15, 431–436, doi:10.3762/bjoc.15.37

Full Text

Convergent synthesis of a tetrasaccharide repeating unit of the O-specific polysaccharide from the cell wall lipopolysaccharide of Azospirillum brasilense strain Sp7

Pintu Kumar Mandal,
Debashis Dhara and
Anup Kumar Misra

Full Research Paper
Published 29 Jan 2014

PDF
Album
1. Graphical Abstract
2. Figure 1: Structure of the synthesized tetrasaccharide and its precursor intermediates. PMB: p-methoxybenzyl.
  
  Jump to Figure 1
3. Scheme 1: Reagents and conditions: (a) 2,2-dimethoxypropane, p-TsOH, DMF, room temperature, 12 h; (b) acetic ...
  
  Jump to Scheme 1
4. Scheme 2: Reagents: (a) N-iodosuccinimide (NIS), TfOH, CH₂Cl₂, MS 4 Å, −30 °C, 1 h, then 0 °C, 1 h, 77%; (b) ...
  
  Jump to Scheme 2
Supp. Info

Beilstein J. Org. Chem. 2014, 10, 293–299, doi:10.3762/bjoc.10.26

Full Text

Straightforward synthesis of a tetrasaccharide repeating unit corresponding to the O-antigen of Escherichia coli O16

Manas Jana and
Anup Kumar Misra

Full Research Paper
Published 28 Aug 2013

PDF
Album
1. Graphical Abstract
2. Figure 1: Structure of the tetrasaccharide repeating unit of the O-antigen of Escherichia coli O16.
  
  Jump to Figure 1
3. Figure 2: Structure of the synthesized pentasaccharide and its synthetic intermediates.
  
  Jump to Figure 2
4. Scheme 1: Reagents: (a) N-iodosuccinimide (NIS), TfOH, CH₂Cl₂, MS 4 Å, −30 °C, 1 h, then 0 °C, 1 h, 76%; (b) ...
  
  Jump to Scheme 1
Supp. Info

Beilstein J. Org. Chem. 2013, 9, 1757–1762, doi:10.3762/bjoc.9.203

Full Text

Appel-reagent-mediated transformation of glycosyl hemiacetal derivatives into thioglycosides and glycosyl thiols

Tamashree Ghosh,
Abhishek Santra and
Anup Kumar Misra

Full Research Paper
Published 22 May 2013

PDF
Album
1. Graphical Abstract
2. Scheme 1: Appel-reagent-mediated transformation of glycosyl hemiacetal derivatives into thioglycosides and β-...
  
  Jump to Scheme 1
3. Scheme 2: Plausible mechanistic pathways for the formation of 1,2-trans-thioglycoside and β-glycosyl thiol.
  
  Jump to Scheme 2
Supp. Info

Beilstein J. Org. Chem. 2013, 9, 974–982, doi:10.3762/bjoc.9.112

Full Text

Short synthesis of the common trisaccharide core of kankanose and kankanoside isolated from Cistanche tubulosa

Goutam Guchhait and
Anup Kumar Misra

Letter
Published 11 Apr 2013

PDF
Album
1. Graphical Abstract
2. Figure 1: Structure of the synthesized trisaccharide core found in kankanose, kankanoside F, H₁, H₂ and I iso...
  
  Jump to Figure 1
3. Scheme 1: Reagents: (a) 0.1 M CH₃ONa, CH₃OH, room temperature, 3 h, 98% for compound 5, 94% for compound 1; (...
  
  Jump to Scheme 1
Supp. Info

Beilstein J. Org. Chem. 2013, 9, 705–709, doi:10.3762/bjoc.9.80

Full Text

Removal of benzylidene acetal and benzyl ether in carbohydrate derivatives using triethylsilane and Pd/C

Abhishek Santra,
Tamashree Ghosh and
Anup Kumar Misra

Full Research Paper
Published 14 Jan 2013

PDF
Album
1. Graphical Abstract
2. Scheme 1: Removal of benzylidene acetal and benzyl ether by using a combination of triethylsilane and 10% Pd/...
  
  Jump to Scheme 1
Supp. Info

Beilstein J. Org. Chem. 2013, 9, 74–78, doi:10.3762/bjoc.9.9

Full Text

Convergent synthesis of the tetrasaccharide repeating unit of the cell wall lipopolysaccharide of Escherichia coli O40

Abhijit Sau and
Anup Kumar Misra

Full Research Paper
Published 22 Nov 2012

PDF
Album
1. Graphical Abstract
2. Figure 1: Structure of the tetrasaccharide repeating unit of the cell-wall lipopolysaccharide of Escherichia ...
  
  Jump to Figure 1
3. Figure 2: Structure of the synthesized tetrasaccharide 1 and its synthetic precursors.
  
  Jump to Figure 2
4. Scheme 1: Synthesis of disaccharide derivative 8. Reagents and conditions: (a) benzyl bromide, NaOH, DMF, roo...
  
  Jump to Scheme 1
5. Scheme 2: Synthesis of disaccharide derivative 9. Reagents and conditions: (a) NIS, HClO₄–SiO₂, MS 4Å, CH₂Cl₂...
  
  Jump to Scheme 2
6. Scheme 3: Synthesis of target tetrasaccharide 1. Reagents and conditions: (a) NIS, HClO₄–SiO₂, CH₂Cl₂, −15 °C...
  
  Jump to Scheme 3
Supp. Info

Beilstein J. Org. Chem. 2012, 8, 2053–2059, doi:10.3762/bjoc.8.230

Full Text

Convergent synthesis of the tetrasaccharide repeating unit of the O-antigen of Shigella boydii type 9

Abhishek Santra and
Anup Kumar Misra

Full Research Paper
Published 29 Aug 2011

PDF
Album
1. Graphical Abstract
2. Figure 1: Structure of the tetrasaccharide repeating unit of the O-antigen of Shigella boydii type 9.
  
  Jump to Figure 1
3. Figure 2: Structure of the synthesized tetrasaccharide and its intermediates.
  
  Jump to Figure 2
4. Scheme 1: Reagents: (a) acetic anhydride, sulfamic acid, 60 °C, 30 min, 91%; (b) Et₃SiH, I₂, 0–5 °C, 30 min, ...
  
  Jump to Scheme 1
5. Scheme 2: Reagents: (a) HClO₄–SiO₂, CH₂Cl₂, −15 °C, 1 h, 81%; (b) benzyl bromide, NaOH, n-Bu₄NBr, THF, rt, 2 ...
  
  Jump to Scheme 2
6. Scheme 3: Reagents: (a) N-iodosuccinimide, HClO₄–SiO₂, −10 °C, 1 h, 82%; (b) 0.1 M CH₃ONa, CH₃OH, rt, 3 h; (c...
  
  Jump to Scheme 3
Supp. Info

Beilstein J. Org. Chem. 2011, 7, 1182–1188, doi:10.3762/bjoc.7.137

Full Text

Other Beilstein-Institut Open Science Activities

Keep Informed

RSS Feed

Subscribe to our Latest Articles RSS Feed.

Subscribe

Email Notification

Register and get informed about new articles.

Register

Follow the Beilstein-Institut

Twitter: @BeilsteinInst