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Stereoselective Synthesis of Unnatural Spiroisoxazolinoproline-Based Amino Acids and Derivatives
- Source :
- The Journal of Organic Chemistry. 67:5673-5677
- Publication Year :
- 2002
- Publisher :
- American Chemical Society (ACS), 2002.
-
Abstract
- A route to spiroisoxazolinoproline-based amino acid derivatives is reported in which exo-methyleneprolinate 4 (tert-butyl ester) reacts as a dipolarophile with nitrile oxides to generate spiroisoxazolinoprolinates 7/10/11 in good yields (70-75%) and with ca. 1:4 cis:trans diastereoselectivity. tert-Butyl spiroisoxazolinoprolinates were separable by column chromatography and amenable to scale-up leading to single diastereoisomers of N-Boc and N-Fmoc protected spiroisoxazolinoproline amino acids.
- Subjects :
- Models, Molecular
chemistry.chemical_classification
Proline
Nitrile
Stereochemistry
Organic Chemistry
Molecular Conformation
Diastereomer
Enantioselective synthesis
Stereoisomerism
General Medicine
Chemical synthesis
Pyrrole derivatives
Amino acid
Structure-Activity Relationship
chemistry.chemical_compound
Column chromatography
chemistry
1,3-Dipolar cycloaddition
Organic chemistry
Stereoselectivity
Amino Acids
Oxazoles
Subjects
Details
- ISSN :
- 15206904 and 00223263
- Volume :
- 67
- Database :
- OpenAIRE
- Journal :
- The Journal of Organic Chemistry
- Accession number :
- edsair.doi.dedup.....b6f2a2644c109b5587b6152072264fc9