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Structures of polypeptides from α-amino acids disubstituted at the α-carbon

✍ Scribed by Toniolo, Claudio; Benedetti, Ettore


Book ID
126924454
Publisher
American Chemical Society
Year
1991
Tongue
English
Weight
884 KB
Volume
24
Category
Article
ISSN
0024-9297

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Dysibetaine: a new α,α-disubstituted α-a
✍ Ryuichi Sakai; Chie Oiwa; Kojiroh Takaishi; Hisao Kamiya; Michito Tagawa 📂 Article 📅 1999 🏛 Elsevier Science 🌐 French ⚖ 209 KB

A new ct,o~-disubstituted ct-amino acid derivative, dysibetaine (1), was isolated from an aqueous extract of the marine sponge Dysidea herbacea collected in Yap, Micronesia. The structure of 1, (2R\*,4R\*)-2-(trimethylammonium)methyl-4-hydroxy-5-oxoprolinate, was determined by spectral methods and X