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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1409560Generated: October 31, 2026

5-Ethoxycarbonylmethyl-2-methyl-3-(1-phenyl-cyclopentylmethyl)-2,5-dihydro-[1,2,4]oxadiazole-5-carboxylic acid ethyl ester → 5-Hydroxy-1-methyl-6-oxo-2-(1-phenyl-cyclopentylmethyl)-1,6-dihydro-pyrimidine-4-carboxylic acid ethyl ester

https://huagongshe.com/reaction/1409560

Reaction equation

Participants

RoleNameHCIDCharge
Reactant5-Ethoxycarbonylmethyl-2-methyl-3-(1-phenyl-cyclopentylmethyl)-2,5-dihydro-[1,2,4]oxadiazole-5-carboxylic acid ethyl esterHCID 86710261—
ReactantMethyl 5,6-dihydroxy-2-((1-phenylcyclopentyl)methyl)pyrimidine-4-carboxylateHCID 136377077—
Product5-Hydroxy-1-methyl-6-oxo-2-(1-phenyl-cyclopentylmethyl)-1,6-dihydro-pyrimidine-4-carboxylic acid ethyl esterHCID 86710260—

Reaction Steps

5-Hydroxy-1-methyl-6-oxo-2-(1-phenyl-cyclopentylmethyl)-1,6-dihydro-pyrimidine-4-carboxylic acid ethyl ester was synthesized as a brown solid (35 mg, 20%) from 200 mg of 5-ethoxycarbonylmethyl-2-methyl-3-(1-phenyl-cyclopentylmethyl)-2,5-dihydro-[1,2,4]oxadiazole-5-carboxylic acid ethyl ester following the procedure described for 5-hydroxy-6-oxo-2-(1-phenyl-cyclopentylmethyl)-1,6-dihydro-pyrimidine-4-carboxylic acid methyl ester (Example 6). LCMS: m/z=357.0 (MH+).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08921388B2
Source datasetuspto-grants-2014_12
ORD IDord-a528acfcb7ad41e1a3159ac8a6da45c0
Source noteuspto-grants-2014_12