908150-01-6

Upstream product

• 908150-00-5 (1S,5R)-N-(2-iodo-4,5-methylenedioxyphenylacetyl)-6-azaspiro[4.4]nonan-1-ol 
• 98-59-9 p-toluenesulfonyl chloride 
• 144369-42-6 2-(3,4-methylenedioxy-6-iodophenyl)acetyl chloride 
• 246256-89-3 2-(3,4-methylenedioxy-6-iodophenyl)acetic acid 
• 908150-09-4 Acetic acid (5R,6S)-1-acetyl-1-aza-spiro[4.4]non-6-yl ester 
• 908149-97-3 (4S,5S)-N-acetyl-4-acetoxy-6-azaspiro[4.4]non-1-ene 
• 869503-38-8 Acetic acid (5S,6S,9R)-1-acetyl-9-hydroxy-1-aza-spiro[4.4]non-7-en-6-yl ester 
• 52199-45-8 2-(2'-iodo-4',5'-methylenedioxyphenyl)ethanol 

Relevant academic research and scientific papers

Application of the photocyclization reaction of 1,2-cyclopenta-fused pyridinium perchlorate to formal total syntheses of (-)-cephalotaxine

Two strategies for the formal total synthesis of (-)-cephalotaxine, based on pyridinium salt photochemistry, are described. The routes begin with photocyclization reaction of 1,2-cyclopenta-fused pyridinium perchlorate. This process efficiently and regios