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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 876031Generated: October 27, 2026

Trifluoroacetic acid → Ethyl (4-((6-((9-cyclopentyl-9 H-pyrido[4',3':4,5]pyrrolo[2,3-d]pyrimidin-2-yl)amino)-3-pyridinyl)methyl)-1-piperazinyl)acetate

https://huagongshe.com/reaction/876031

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
Reactant9-Cyclopentyl-9H-pyrido[4',3':4,5]pyrrolo[2,3-d]pyrimidin-2-amineHCID 58299585—
ReactantEthyl 2-(4-((6-chloropyridin-3-yl)methyl)piperazin-1-yl)acetateHCID 58300204—
ProductEthyl (4-((6-((9-cyclopentyl-9 H-pyrido[4',3':4,5]pyrrolo[2,3-d]pyrimidin-2-yl)amino)-3-pyridinyl)methyl)-1-piperazinyl)acetateHCID 58299758—

Reaction Steps

Compound 347 was prepared as an off-white solid (TFA salt) from compound 4 and compound 348 using chemistry similar to that described in example 200. 1H NMR (500 MHz, CD3OD) δ ppm 9.57 (1 H, s), 9.27 (1 H, s), 8.60 (2 H, s), 8.47 (1 H, d, J=2.0 Hz), 8.32-8.43 (1 H, m), 8.07 (1 H, dd, J=8.8, 2.2 Hz), 5.46 (1 H, dq, J=9.0, 8.9 Hz), 4.12-4.28 (4 H, m), 3.65 (2 H, br. s.), 2.96-3.21 (8 H, m), 2.48-2.61 (2 H, m), 2.15-2.31 (4 H, m), 1.85-1.99 (2 H, m), 1.28 (3 H, t, J=7.2 Hz). LCMS-ESI (POS), M/Z, M+1: Found 515.2.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08980903B2
Source datasetuspto-grants-2015_03
ORD IDord-8f88a5fba72e43af92feef3e149cf3dc
Source noteuspto-grants-2015_03