A Convenient Preparation of 8-Ethyl-4,9-dihydro-3H-pyrano[3,4-b]indole-1-one, Key Intermediate of the Antiinflammatory Agent Etodolac
摘要:
A facile synthesis of 8-ethyl-4,9-dihydro-3H-pyrano [3,4-b]indole-1-one 5 is described which features the condensation of hydrazines with 2-oxo-5-hydroxypentanoic acid, followed by Fischer cyclization of these adducts.
A Convenient Preparation of 8-Ethyl-4,9-dihydro-3H-pyrano[3,4-b]indole-1-one, Key Intermediate of the Antiinflammatory Agent Etodolac
摘要:
A facile synthesis of 8-ethyl-4,9-dihydro-3H-pyrano [3,4-b]indole-1-one 5 is described which features the condensation of hydrazines with 2-oxo-5-hydroxypentanoic acid, followed by Fischer cyclization of these adducts.