Total Syntheses of Pleiocarpamine, Normavacurine, and C-Mavacurine
摘要:
The total syntheses of C-mavacurine-type indole alkaloids, (+/-)-pleiocarpamine, (+/-)-normavacurine, and (+/-)-C-mavacurine, were accomplished. The key step in the syntheses was the cyclization between the metal carbenoid at C-16 and the N-1 position in a Corynanthe-type compound that was equipped with a diazo function. For this cyclization, the N-4 modification of the substrate using an amine-borane complex was indispensable to fix the molecular conformation.
Total Syntheses of Pleiocarpamine, Normavacurine, and C-Mavacurine
摘要:
The total syntheses of C-mavacurine-type indole alkaloids, (+/-)-pleiocarpamine, (+/-)-normavacurine, and (+/-)-C-mavacurine, were accomplished. The key step in the syntheses was the cyclization between the metal carbenoid at C-16 and the N-1 position in a Corynanthe-type compound that was equipped with a diazo function. For this cyclization, the N-4 modification of the substrate using an amine-borane complex was indispensable to fix the molecular conformation.