This support consists of MBHA resin functionalized with Riniker′s hyperacid-labile 4-hydroxymethyl-3-methoxyphenoxybutyric acid linker [1].This hyperacid-sensitive resin is a useful tool for the Fmoc SPPS of protected peptide acid fragments. Attachment of carboxylic acids is normally achieved by DMAP catalyzed esterification with the appropriate symmetrical anhydride, or by using 2,6-dichlorobenzoylchloride/pyridine [2] or MSNT/Melm activation [3,4,5].Detachment of these functionalities can be effected by treatment with 1-5% TFA in DCM.
Associated Protocols and Technical Articles
Protocols for Loading of Peptide Synthesis Resins
Linkage
Replaces: 01-64-0036
Analysis Note
Colour (visual): white to yellow to beige
Appearance of substance (visual): beads
Loading (determined from the substitution of the Fmoc-Leu loaded resin): 0.40 – 1.00 mmol/g
Swelling Volume (in DMF): lot specific result
The polymer matrix is copoly ( styrene – 1% DVB ) 100- 200 mesh
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