Novel Approach for the Synthesis of Five-Membered-Ring-Fused Pyrazinones
✍ Scribed by Vincent Gembus; Solenn Janvier; Jean-Pierre Lecouvé; Philippe Gloanec; Francis Marsais; Vincent Levacher
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 114 KB
- Volume
- 2010
- Category
- Article
- ISSN
- 1434-193X
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✦ Synopsis
Abstract
We describe a new route to access important pharmaceutical intermediates for the synthesis of constrained fused pyrazinones. These compounds are prepared in five to seven steps with a good overall yield from glycine methyl ester and commercial propanediol derivatives involving an intramolecular alkylation of a glycine moiety as key step.
📜 SIMILAR VOLUMES
## Abstract Novel quinolines fused with a six‐member ring **5a–j** were prepared in high yields (75–95%) via the Friedländer reaction of dimethoxy‐substituted __o__‐aminobenzaldehydes of **3a** or **3b** with cyclic ketones **4**, respectively. The structures of **5a–j** were determined by IR, ^1^H