𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Stereoselective synthesis of functional dehydrophenylalanine derivatives from novel β-chloroamino esters

✍ Scribed by Brahim Ould Elemine; Mohamed Rached Ennigrou; Rafâa Besbes


Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
233 KB
Volume
23
Category
Article
ISSN
1042-7163

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

New functional dehydrophenylalanines 3 were prepared from β‐amino alcohols 1 in a two‐step reaction sequence. The synthesis involved chlorination of the starting amino alcohols 1 to afford the intermediate erythro β‐chloroamines 2. Treatment of the latter with an appropriate base led to a highly stereoselective elimination reaction, giving the corresponding (E)‐dehydrophenylalanine derivatives 3 in high yields. © 2011 Wiley Periodicals, Inc. Heteroatom Chem 23:91–98, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/hc.20756


📜 SIMILAR VOLUMES


Synthesis of tetronic acid derivatives f
✍ Christos Mitsos; Alexandras Zografos; Olga Igglessi-Markopoulou 📂 Article 📅 2002 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 49 KB

## Abstract Active esters, produced by condensation of __O__‐acetyl protected α‐hydroxyacids with __N__‐hydroxysuccin‐imide, react with anions of active methylene compounds to afford β,β‐tricarbonyl derivatives which upon deprotection undergo cyclization to 3‐alkoxycarbonyl and 3‐acyl tetronic acid

Stereoselective synthesis of 3β-bile aci
✍ J.K. Denike; M. Moskova; X.X. Zhu 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 493 KB

The stereoselective transformation from the commonly occurring 3~-bile acids and derivatives to their 3fl-analogs is important for certain applications of these amphiphilic natural compounds, especially in the preparation of polymers. We report here the stereoselective conversion of methyl cholate t