5241-56-5Relevant articles and documents
Synthesis of Terminal Thiazoles from N-Protected Amino Acids and a Study of Their Antibacterial Activities
Lalithamba,Uma,Gowthami,Nagendra
, p. 181 - 191 (2020/03/30)
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β,γ-diamino acids as building blocks for new analogues of Gramicidin S: Synthesis and biological activity
Wan, Yang,Stanovych, Andrii,Gori, Didier,Zirah, Séverine,Kouklovsky, Cyrille,Alezra, Valérie
, p. 122 - 128 (2018/03/06)
We describe here the synthesis and biological activity study of a pair of diastereomeric analogues of Gramicidin S using β,γ-diamino acids as β-turn mimic. The synthesis of the orthogonally protected β,γ-diamino acids was achieved in 6 steps starting from D-alanine. The analogues were then synthesized in solution phase and on solid phase. Biological activity tests showed that, compared with Gramicidin S, both analogues exerted diminished hemolytic activity while they retained interesting antibacterial activity.
Amidation of carboxylic acids via the mixed carbonic carboxylic anhydrides and its application to synthesis of antidepressant (1S,2R)-tranylcypromine
Ezawa, Tetsuya,Kawashima, Yuya,Noguchi, Takuya,Jung, Seunghee,Imai, Nobuyuki
, p. 1690 - 1699 (2017/11/14)
Primary amidations of carboxylic acids 1 or 3 with NH4Cl in the presence of ClCO2Et and Et3N were developed to afford the corresponding primary amides in 22% to quantitative yields. Additionally, we have applied the amidation to the preparation of various amides containing hydroxamic acids and achieved the synthesis of (1S,2R)-tranylcypromine as an antidepressant medicine via Lossen rearrangement.