88995-71-5

Upstream product

• 88981-61-7 2,2,2-trichloroethyl cis-2,3,4,4a,5,6,7,11c-octahydro-5α-chloro-7-<(p-methoxyphenyl)sulfonyl>-1H-pyrido<3,2-c>carbazole-1-carboxylate 
• 84960-65-6 (E)-1-<(p-methoxyphenyl)sulfonyl>-2-methyl-3-indole 
• 80664-26-2 N-<(4-methoxyphenyl)sulfonyl>-2-methylindole-3-carboxaldehyde 
• 7031-27-8 (phenylthio)acetic acid chloride 
• 84960-67-8 cis-2,3,4,4a,5,6,7,11c-octahydro-5α-chloro-7-<(p-methoxyphenyl)-sulfonyl>-1H-pyrido<3,2-c>carbazole 

Downstream Products

• 84986-95-8 2,3,4,5-tetradehydro-1-<(p-methoxyphenyl)sulfonyl>-11β-(phenylthio)-11α-(prop-2-en-1-yl)-20,21-dinoraspidospermidin-10-one 
• 88981-62-8 C₃₈H₃₁N₅O₆S₂ 
• 88995-72-6 C₃₄H₃₂N₂O₆S₂ 
• 88995-76-0 (+)-2,3,4,5-tetradehydro-1-<(p-methoxyphenyl)sulfonyl>-11α-methyl-11β-(p-tolylthio)-20,21-dinoraspidospermidin-10-one 
• 84960-68-9 2,3,4,5-tetradehydro-1-<(p-methoxyphenyl)sulfonyl>-11β-(phenylthio)-20,21-dinoraspidospermidin-10-one 
• 84986-94-7 2-Benzenesulfinyl-1-[(4aS,5S,11cR)-5-chloro-7-(4-methoxy-benzenesulfonyl)-2,3,4,4a,5,6,7,11c-octahydro-pyrido[3,2-c]carbazol-1-yl]-ethanone 

Relevant academic research and scientific papers

Synthesis of (+/-)-10,22-Dioxokopsane and (+/-)-Kopsanone, Heptacyclic Indole Alkaloids. Synthetic and Mechanistic Studies

The total synthesis of the heptacyclic indole alkaloids (+/-)-10,22-dioxokopsane (2) and (+/-)-kopsanone (3, X=O) is described.The imine 20 was condensed with β,β,β-trichloroethyl chloroformate to give the tetracyclic carbamate 21.Removal of the carbamate