516. N-carboxy-anhydrides of O-acetyl- and O-carbobenzyloxy-serine
✍ Scribed by Frankel, Max ;Halmann, M.
- Book ID
- 121399096
- Publisher
- The Royal Society of Chemistry
- Year
- 1952
- Weight
- 286 KB
- Category
- Article
- ISSN
- 0368-1769
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📜 SIMILAR VOLUMES
## Abstract __N__‐protected peptides, which are important intermediates as a carboxyl component in the fragment condensation method, have been prepared in high yields by the reaction of __o__‐nitrophenylsulfenyl (Nps) __N__‐carboxy α‐amino acid anhydrides with unprotected peptides and amino acids i
## Abstract Syntheses and analyses are described for β‐N‐phenyl [^14^C(U)]‐L‐asparagine, O‐acetyl [1‐^14^C]‐L‐serine, O‐benzoyl [7‐^14^C]‐L‐serine, benzyl[7‐^14^C]glycinate __p__‐toluenesulfonate, benzyl glycinate[1‐^14^C] __p__‐toluenesulfonate, and α‐dimethylaminoisobutyric acid[1‐^14^C].
## Abstract Two new fluorescent regioselective __O__‐acetylated __N__‐acetylneuraminic acid (Neu5Ac) thioketosides, 2α‐[4‐(dansylamino)phenylthio]‐7,8,9‐tri‐__O__‐acetyl‐__N__‐acetylneuraminic acid {2α‐[4‐(dansylamino)phenylthio]‐Neu5,7,8,9Ac~4~} (3) and 2α‐[4‐(dansylamino)phenylthio]‐4‐__O__‐acety