Application of Modified Flavone Closure for the Preparation of Racemic L86-8275
摘要:
The laboratory preparation of racemic L86-8275 (la) and the salt (Ib) is described in 7% overall yield. Our method eliminated a number of chromatography steps from the patent procedure and improved the flavone-forming reaction by employing a stepwise mechanism. Solvent-free conditions for the demethylation step are also described.
Application of Modified Flavone Closure for the Preparation of Racemic L86-8275
摘要:
The laboratory preparation of racemic L86-8275 (la) and the salt (Ib) is described in 7% overall yield. Our method eliminated a number of chromatography steps from the patent procedure and improved the flavone-forming reaction by employing a stepwise mechanism. Solvent-free conditions for the demethylation step are also described.