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8.55019

Sigma-Aldrich

p-Nitrophenyl carbonate Wang resin

Novabiochem®

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About This Item

UNSPSC Code:
12352005

Quality Level

product line

Novabiochem®

form

beads

reaction suitability

reaction type: Fmoc solid-phase peptide synthesis
reactivity: amine reactive

manufacturer/tradename

Novabiochem®

application(s)

peptide synthesis

storage temp.

15-25°C

General description

Resin-bound p-nitrophenyl carbonate esters react readily with amines to provide the corresponding resin-bound carbamate. Leznoff [1] was the first to demonstrate the utility of such resins in solid phase synthesis with the preparation of mono-acylated diamines from symmetrical diamines. Similarly, Dressman, et al. [2] have used carbamate linked resin-bound amino acid amides to make hydantoins via a base-mediated cyclization/cleavage strategy. Amines linked to p-nitrophenyl carbonate Wang resin possess similar chemical properties to methoxybenzyloxycarbonyl protected amines. The resin-bound carbamate is, therefore, cleaved with TFA or hydrogenolysis to afford the free amine [3]. Alternatively, cleavage by reduction with lithium aluminium hydride can be used to generate N-methylamines [4], and Raju & Kogan [5] have utilized this resin to prepare sulfonamides by acylation of immobilized arylamines and cleavage with LiOH or NaOMe. An analogous p-nitrophenyl carbonate resin prepared from NovaSyn TGA resin was employed as a support for the solid phase immobilization of amidines [6]. This resin was also used to synthesize polyamines [7, 8], and to immobilize indoles [9] and guanidinylating reagents [10]. Loading of this resin can be quantified by measuring the release of p-nitrophenolate [11].

Associated Protocols and Technical Articles
Protocols for Loading of Peptide Synthesis Resins

Literature references

[1] D. M. Dixit, et al. (1978) Israel J. Chem., 17, 248.
[2] B. A. Dressman, et al. (1996) Tetrahedron Lett., 37,937.
[3] J. R. Hauske, et al. (1995) Tetrahedron Lett., 36, 1589.
[4] C. Y. Ho & M. J. Kukla (1997) Tetrahedron Lett., 38, 2799.
[5] B. Raju & T. P. Kogan (1997) Tetrahedron Lett., 38, 3373.
[5] A. K. Ghosh, et al. (2001) J. Org. Chem., 66, 2161.
[6] R. Mohan, et al. (1998) Bioorg. Med. Chem. Lett., 8, 1877.
[7] S. Tomasi, et al. (1998) Bioorg. Med. Chem. Lett., 8, 635.
[8] N. D. Hone & L. J. Payne (2000) Tetrahedron Lett., 41, 6149.
[9] A. L. Smith, et al. (2000) Bioorg. Med. Chem. Lett., 10, 2693.
[10] A. K. Ghosh, et al. (2001) J. Org. Chem., 66, 2161.
[11] A. Paio, et al. (2003) Tetrahedron Lett., 44, 1867.

Linkage

Replaces: 01-64-0123

Analysis Note

Color (visual): white to yellow to beige
Appearance of substance (visual): beads
Loading / photometric determination of p-nitrophenol released upon treatment with piperidine / DMF: 0.60 - 1.20 mmol/g
Swelling Volume (in DMF): lot specific result
The polymer matrix is copoly (styrene - 1% DVB ), 100 - 200 mesh.

Legal Information

Novabiochem is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


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