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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


Diastereoselective synthesis of (1S,2S,3
✍ Elena Buñuel; Carlos Cativiela; Maria D. Diaz-de-Villegas 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 430 KB

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.