A novel approach for the asymmetric synthesis of (3S,4R)-3-amino-4-alkyl-2-piperidinones: conformationally constrained dipeptides
✍ Scribed by Céline Flamant-Robin; Qian Wang; N.André Sasaki
- Book ID
- 104231894
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- French
- Weight
- 57 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
A straightforward method is developed for the synthesis of enantiopure (3S,4R)-3-amino-4-alkyl-2-piperidinone derivatives, six-membered lactam-bridged dipeptides, via highly diastereofacial selective 1,4-addition of organocuprate to the chiral oxazolidine a,b-unsaturated ester 1 as the key step.
📜 SIMILAR VOLUMES
The tide compounds were prepared from key intermediates readily obtained by the stereoselective Diels-Alder reaction of (Z)-2-pbenyl-4-[(S)-2,2-dimethyl-l,3dioxolan-4-ylmethylene]-5(4H)-oxazolone, a chiral az-lactone derived from (R)glyceraldehyde and cyclopentadiene.