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- W2952563670 abstract "Chiral (Z)-α,β-didehydroamino acid (DDAA) derivatives 14, 15 and 16 are obtained from a new chiral iminic cyclic glycine template with 1,2,3,6-tetrahydropyrazin-2-one structure 10 by condensation with carbonyl compounds, Eschenmoser's salt and Bredereck's reagent, respectively. The didehydroalanine derivative 15 and the enaminone 16 can give DDAA derivatives 14 using Heck olefination and vinylic nucleophilic substitution. These DDAA derivatives 14 and 15 undergo diastereoselective cyclopropanation, 1,3-dipolar and Diels–Alder cycloaddition reactions giving, after hydrolysis, the corresponding cyclic and bicyclic α-amino acids." @default.
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- W2952563670 date "2001-07-01" @default.
- W2952563670 modified "2023-09-28" @default.
- W2952563670 title "Asymmetric synthesis of α-amino acids from α,β-(Z)-didehydroamino acid derivatives with 1,2,3,6-tetrahydropyrazin-2-one structure" @default.
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- W2952563670 doi "https://doi.org/10.1016/s0040-4020(01)00553-1" @default.
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