Výsledky vyhledávání - "Yara Ramirez-Quiros"

Enantioselective synthesis of β-amino acids. Part 10: Preparation of novel α,α- and β,β-disubstituted β-amino acids from (S)-asparagine

Autor: Marı́a Luisa Kaiser-Carril, Eusebio Juaristi, Margarita Balderas, Víctor M. Jiménez-Pérez, Yara Ramirez‐Quiros, Heraclio López-Ruiz

Publikováno v: Tetrahedron: Asymmetry. 10:3493-3505

Perhydropyrimidinone ( S )- 1 is alkylated with very high diastereoselectivity to give trans products (2 S ,5 R )- 3 , (2 S ,5 R )– 4 and (2 S ,5 R )- 5 . Dialkylation of ( S )- 1 also proceeds with complete stereoselectivity to afford adducts (2 S

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e84ddf1cc12675c8d934c206616956ae
https://doi.org/10.1016/s0957-4166(99)00328-6

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Enantioselective Synthesis of α-Amino Acids from Chiral 1,4-Benzodiazepine-2,5-diones Containing the α-Phenethyl Group

Autor: Yara Ramirez‐Quiros, José Luis León-Romo, Eusebio Juaristi

Publikováno v: The Journal of Organic Chemistry. 64:2914-2918

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2035ca11336f8bb193b723772e34fffa
https://doi.org/10.1021/jo980777z

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α-Alkylation of (S)-Asparagine with Self-Regeneration of the Stereogenic Center: Enantioselective Synthesis of α-Substituted Aspartic Acids1,2

Autor: Jaime Escalante, Yara Ramirez‐Quiros, Heraclio López-Ruiz, Domingo Madrigal, Eusebio Juaristi

Publikováno v: The Journal of Organic Chemistry. 63:4706-4710

A convenient method for the α-alkylation of (S)-asparagine with “self-regeneration of the stereogenic center” is described. The synthetic protocol involves stereoselective conversion of (S)-asparagine into enantiopure imino ether (2S,6S)-9, whic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8645907aedef0ffa04110f3aa180e521
https://doi.org/10.1021/jo980367a

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ChemInform Abstract: Enantioselective Synthesis of β-Amino Acids. Part 9. Preparation of Enantiopure α,α-Disubstituted β-Amino Acids from 1-Benzoyl-2(S)-tert-butyl-3-methylperhydropyrimidin-4-one

Autor: Eusebio Juaristi, Margarita Balderas, Yara Ramirez-Quiros

Publikováno v: ChemInform. 30

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d815529bd8ee7bad13c40b6c2e50026e
https://doi.org/10.1002/chin.199916198

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ChemInform Abstract: Enantioselective Synthesis of β-Amino Acids. Part 10. Preparation of Novel α,α- and β,β-Disubstituted β-Amino Acids from (S)-Asparagine

Autor: Margarita Balderas, Marı́a Luisa Kaiser-Carril, Yara Ramirez‐Quiros, Eusebio Juaristi, Heraclio López-Ruiz, Víctor M. Jiménez-Pérez

Publikováno v: ChemInform. 31

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e2711bd11f1a2894e2be888d05e44b59
https://doi.org/10.1002/chin.200004086

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