A novel synthesis of pyrromethenones

✍ Scribed by Peter A. Jacobi; Subhas C. Buddhu

• Book ID: 104216717
• Publisher: Elsevier Science
• Year: 1988
• Tongue: French
• Weight: 296 KB
• Volume: 29
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(00)80618-8

✦ Synopsis

Pyrromethenones are prepared by a process involving acylation of an N-aminopyrrole with a suitable acetylenic acid, followed by sequential S-exo-dig cyclization and 3J-sigmatropic shifr.

Phytochrome (la) is a member of the biliprotein family of chromophores, which are made up of linear tetrapyrrole derivatives covalently bonded to a protein residue. 1 Together with the closely related species phycoerythrin (lb) and phycocyanin (lc), la plays an active role in photomorphogenesis