Tetrahedron Letters p. 5357 - 5360 (1999)
Update date:2022-07-29
Topics:
Node, Manabu
Nakamura, Soichi
Nakamura, Daisaku
Katoh, Takahiro
Nishide, Kiyoharu
The porcine liver esterase-catalyzed dealkoxycarbonylation of 8-benzyl- 3-oxo-8-azabicyclo[3.2.1]octane-2,4-dicarboxylates (4) was found to give high enantiomeric excess of the desymmetrized keto ester (5). This novel dealkoxylcarbonylation opened a new route to the asymmetric synthesis of (1R)-cocaine related radiopharmaceuticals such as (1R)-β-CIT, for diagnosis of Parkinson's disease.
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(1990)