263898-69-7

Downstream Products

• 161326-14-3 diethyl 1,5-dihydro-4-methyl-5-oxo-3-(p-tolyl)-2H-pyrrol-2-ylphosphonate 
• 152656-88-7 3-Methyl-5-(toluene-4-sulfonyl)-4-p-tolyl-1,5-dihydro-pyrrol-2-one 
• 263898-73-3 5-acetoxy-5-(t-butoxycarbonyl)-1,5-dihydro-3-methyl-4-(p-tolyl)-2H-pyrrol-2-one 

Relevant academic research and scientific papers

An efficient method to construct the A,B-rings component toward total syntheses of phycocyanobilin and its derivative as a photoprobe

Total syntheses of physocyanobilin and its derivative bearing a photoreactive group at the D-ring accomplished by developing a new and efficient method for the construction of A,B-rings component, which consists of the Wittig-type new coupling reaction of 4-(1-methoxyethyl or 1- tosylethyl)-3-methyl-5-tosyl-1,5-dihydro-2H-pyrrol-2-one and a 2-formyl pyrrole derivative in the presence of (n)Bu3P and a base, followed by reduction with aluminum amalgam and a subsequent acid or base treatment.