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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1760151Generated: November 2, 2026

L-Pyroglutamic Acid → 5-oxo-L-prolyl-L-glutamine

https://huagongshe.com/reaction/1760151

Reaction equation

Participants

RoleNameHCIDCharge
ReactantL-Pyroglutamic AcidHCID 7405—
ReactantPivaloyl chlorideHCID 62493—
ReactantHCID 5287779HCID 5287779—
Product5-oxo-L-prolyl-L-glutamineHCID 11010621—

Reaction Steps

A mixed anhydride from L-pyroglutamic acid 9 and pivaloyl chloride was coupled with L-glutamine t-butyl ester 10 followed by acidic workup to yield L-pyroglutamyl-L-glutamine 7 (Equation 2). This dipeptide was purified by reversed phase HPLC using a gradient system of acetonitrile/H2O.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06841530B2
Source datasetuspto-grants-2005_01
ORD IDord-59ef154b662045288986d2e4bfa7b4f4
Source noteuspto-grants-2005_01