Benzyl (3-chloro-3-oxopropyl)carbamate → L-Lysine, 4-oxo-

HRID 1698875Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1698875
[NH:1](C(OC(C)(C)C)=O)[C@H:2]([C:6]([O:8]C)=[O:7])[CH2:3][Zn]I.[NH:17](C(OCC1C=CC=CC=1)=O)[CH2:18][CH2:19][C:20](Cl)=[O:21]>>[O:21]=[C:20]([CH2:19][CH2:18][NH2:17])[CH2:3][C@@H:2]([C:6]([OH:8])=[O:7])[NH2:1]

Komponenten

3

Edukt 2

HCID 13375984Benzyl (3-chloro-3-oxopropyl)carbamateHCID 178501479HCID 178501479, Verbindung

Produkt 1

HCID 45082345L-Lysine, 4-oxo-

Versuchsvorschrift

Boc-L-Ala(ZnI)-OMe is reacted with Z-beta-Ala-Cl under conditions described in J. Org Chem 57, 1992, pp 3397-3404 to give a protected 4-keto-L-lysine which is then dissolved in DCM and treated with DAST to yield protected 4,4-difluoro-L-lysine. The epsilon carbobenzoxy protecting group is then removed under catalytic hydrogenolysis conditions. The resulting compound is reacted with methyl acetimidate hydrochloride to yield the epsilon amidine which was then reacted with 2 N HCl to give the title compound.

Quellen und Nachweise

ORD-Eintrag
ord-dd15f6fdec0b4ce8bf43104a5e76be03
Quelldatensatz
uspto-grants-2002_02
Patentnummer
US06344483B1

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