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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 480111Generated: October 30, 2026

3-[4-(2,6-Dioxo-1,3-dipropyl-2,3,6,7-tetrahydro-1H-purin-8-yl)-bicyclo[2.2.2]oct-1-yl]-acrylic acid → Tonapofylline

https://huagongshe.com/reaction/480111

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3-[4-(2,6-Dioxo-1,3-dipropyl-2,3,6,7-tetrahydro-1H-purin-8-yl)-bicyclo[2.2.2]oct-1-yl]-acrylic acidHCID 67079101—
CatalystPalladiumHCID 23938—
SolventMethanolHCID 887—
ProductTonapofyllineHCID 21646674%

Reaction Steps

3-[4-(2,6-Dioxo-1,3-dipropyl-2,3,6,7-tetrahydro-1H-purin-8-yl)-bicyclo[2.2.2]oct-1-yl]-acrylic acid (Example 17) (0.050 g) was dissolved in 5 ml of MeOH and combined with 0.005 g of 10% Pd/C. The reaction vessel was purged three times with N2 and then placed under a balloon of H2 gas. After 2 h, the reaction mixture was filtered and conc'd to give 0.037 g (74% yield) of a white solid. (MH+=417.30)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06649600B1
Source datasetuspto-grants-2003_11
ORD IDord-434870f80e8e4cba9aa9acd18e376b48
Source noteuspto-grants-2003_11