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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1690650Generated: October 30, 2026

4-Hydroxy-1-methyl-1-(pyrazin-2-ylcarbamoylmethyl)-piperidinium bromide → 4-(2-Cyclohexyl-2-hydroxy-2-phenyl-acetoxy)-1-methyl-1-(pyrazin-2-ylcarbamoylmethyl)-piperidinium bromide

https://huagongshe.com/reaction/1690650

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-Hydroxy-1-methyl-1-(pyrazin-2-ylcarbamoylmethyl)-piperidinium bromideHCID 86634221—
Reactant(1R/S,2R)-2-Hydroxymethyl-1-(isoxazol-3-ylcarbamoylmethyl)-1-methyl-pyrrolidinium bromideHCID 131729615—
Reactant(R/S)-(2-Cyclohexyl-2-hydroxy-2-phenyl-acetoxymethyl)-1-(isoxazol-3-yl carbamoylmethyl)-1-methyl-pyrrolidinium bromideHCID 131729617—
Product4-(2-Cyclohexyl-2-hydroxy-2-phenyl-acetoxy)-1-methyl-1-(pyrazin-2-ylcarbamoylmethyl)-piperidinium bromideHCID 87197894—

Reaction Steps

This compound is prepared by an analogous method to (1R/S,2R)-2-((R/S)-(2-Cyclohexyl-2-hydroxy-2-phenyl-acetoxymethyl)-1-(isoxazol-3-yl carbamoylmethyl)-1-methyl-pyrrolidinium bromide (Example 1) by replacing (1R/S,2R)-2-hydroxymethyl-1-(isoxazol-3-ylcarbamoyl-methyl)-1-methyl-pyrrolidinium bromide (Intermediate B) with 4-hydroxy-1-methyl-1-(pyrazin-2-ylcarbamoylmethyl)-piperidinium bromide (Intermediate H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08153669B2
Source datasetuspto-grants-2012_04
ORD IDord-ffff1a0573f547d0b8f58b8a77c06dd4
Source noteuspto-grants-2012_04