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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 44806Generated: October 26, 2026

(R)-2-Chloro-7-ethyl-8-isopropyl-5-methyl-6-oxo-5,6,7,8-tetrahydropyrimido[4,5-b]pyrazine → (R)-7-ethyl-8-isopropyl-5-methyl-2-(2-oxo-2-(1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazol-5-yl)ethyl)-7,8-dihydropteridin-6(5H)-one

https://huagongshe.com/reaction/44806

Reaction equation

Participants

RoleNameHCIDCharge
Reactant(R)-2-Chloro-7-ethyl-8-isopropyl-5-methyl-6-oxo-5,6,7,8-tetrahydropyrimido[4,5-b]pyrazineHCID 58405561—
Reactant1-(1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazol-5-yl)ethanoneHCID 58405904—
Product(R)-7-ethyl-8-isopropyl-5-methyl-2-(2-oxo-2-(1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazol-5-yl)ethyl)-7,8-dihydropteridin-6(5H)-oneHCID 58405715—

Reaction Steps

Intermediates C-7 was prepared similarly to the synthetic methods used to prepare intermediate B-1, with Intermediate C instead of Intermediate B and with 1-(1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazol-5-yl)ethanone instead of acetophenone. LCMS: 473.3 m/z (M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08541418B2
Source datasetuspto-grants-2013_09
ORD IDord-331289c135184cc7b05aedf6ef1d1512
Source noteuspto-grants-2013_09