205675-68-9Relevant academic research and scientific papers
Enantioselective synthesis of (1S,4R)-N-(benzylcarbamoyl)-4-aminocyclopent-2-en-1-ol by Candida antarctica lipase B
Wen, Hui-Jiao,Chen, Qing,Zheng, Guo-Jun
, p. 1431 - 1434 (2015)
An efficient biocatalytic process has been developed to obtain optically pure (1S,4R)-N-(benzylcarbamoyl)-4-aminocyclopent-2-en-1-ol which can be used as the key intermediate of ticagrelor. In this research, several N-(benzylcarbamoyl)-4-aminocyclopent-2-
A concise route to (-)-kainic acid.
Nakagawa,Sugahara,Ogasawara
, p. 3181 - 3183 (2007/10/03)
A concise route to (-)-kainic acid from enantiopure (+)-cis-4-carbobenzoxyamino-2-cyclopentenol has been devised by employing concurrent Chugaev syn-elimination and intramolecular ene reaction as the key step.
An asymmetric synthesis of (1S, 4R)-4-amino-2-cyclopentenol derivatives
Asami, Masatoshi,Ogawa, Megumi,Inoue, Seiichi
, p. 1563 - 1564 (2007/10/03)
A highly enantioselective deprotonation of cis-4-aminocyclopentene oxide derivatives 1 was achieved by using a chiral lithium amide, prepared from (2S,3aS,7aS)-2-(pyrrolidin-1-ylmethyl)-octahydroindole. (1S,4R)-4-Amino-2- cyclopentenol derivative 2 was ob
Enzymatic resolution of aminocyclopentenols as precursors to D- and L- carbocyclic nucleosides
Mulvihill,Gage,Miller
, p. 3357 - 3363 (2007/10/03)
Racemic cis-4-aminocyclopent-2-en-1-ols were synthesized in three steps utilizing hetero Diels-Alder chemistry. Starting from suitably protected hydroxylamines, oxidization with sodium periodate and trapping with cyclopentadiene afforded cycloadducts (±)-5a-d. The N-O bond of the cycloadducts was reduced with Mo(CO)6 to afford (±)-cis-4-aminocyclopent- 2-en-1-ols (±)-6a-d. These compounds, or their corresponding acetates, were kinetically resolved by enzymatic acetylation of hydrolysis, respectively. Enzymatic acetylation of cis-N-(benzylcarbamoyl)-4-aminocylopent-2-enol [(±)-6a] with Candida antarctica B lipase and Pseudomonas species lipase gave the corresponding acetate (-)-7a in 90% and 92% ee, respectively, after 40% conversion. Enzymatic hydrolysis of cis-N-acetyl-4-aminocyclopent-2-enol 1-O-acetate (±)-7d with electric eel acetylcholine esterase was successful in providing both cis-N-acetyl-4-aminocyclopent-2-enols (+)-6d and (+)-7d in 92% ee (99% ee after a single recrystallizaton) after 40% conversion. Further synthetic transformation of these resolved synthetic building blocks and derivatives are also reported.
