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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2116582Generated: October 31, 2026

Ammonia → Ngx-267

https://huagongshe.com/reaction/2116582

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmoniaHCID 222—
Reactant4-Ethyl-2-piperidinoneHCID 179570—
ReactantHCID 11528611HCID 11528611—
Reactant2-MERCAPTOBUTYRIC ACIDHCID 11557278—
ProductNgx-267HCID 10013505—

Reaction Steps

There is also provided in accordance with an embodiment of the invention a process for the preparation of 2-ethyl-8-methyl-1-thia-4,8-diaza-spiro[4.5]decan-3-one (AF267), comprising reacting 4-ethyl piperidone with 2-mercaptobutyric acid and ammonia. In an embodiment of the invention, the process further comprising obtaining the enantiomers AF267A (R-enantiomer) and AF267B (S-enantiomer) by chiral separation.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07439251B2
Source datasetuspto-grants-2008_10
ORD IDord-4f3f4d4014714986846ceb75ec8973b0
Source noteuspto-grants-2008_10