Syntheses of Aspartic Acid Derivatives. II. N-Alkylated α- and β-Asparagines
✍ Scribed by Liwschitz, Y.; Edlitz-Pfeffermann, Yolan; Lapidoth, Y.
- Book ID
- 127361547
- Publisher
- American Chemical Society
- Year
- 1956
- Tongue
- English
- Weight
- 514 KB
- Volume
- 78
- Category
- Article
- ISSN
- 0002-7863
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📜 SIMILAR VOLUMES
The controlled opening of the N1 C2 bond in 1-carbamate-substituted 2-azetidinones derived from amino acids by Oand N-nucleophiles provided a straightforward access to orthogonally protected a-alkyl aspartic acid and asparagine derivatives. The use of DBU or sodium azide as additive is essential for
Several &N-alkyl basparagines were prepared from the phthalyl and benzyloxycar-bony1 derivatives. High-molecular-weight poly-&N-benzyl Lasparaghe and poly-&N-(1 )-phenethyl r.-asparagine were prepared from the corresponding N-carboxyanhydrides. From the results obtained by a study of the infrared ab