[EN] PROCESS FOR THE PREPARATION OF AN INTERMEDIATE FOR RAMELTEON<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UN PRODUIT INTERMÉDIAIRE DE RAMELTÉON
申请人:RANBAXY LAB LTD
公开号:WO2011027319A1
公开(公告)日:2011-03-10
The present invention relates to a process for the preparation of (2E)- 1,2,6,7- tetrahydro-8H-indeno[5,4-b]furan-8-ylideneethanenitrile of Formula (I). The present invention further relates to a process for the preparation of ramelteon using (2E)-1,2,6,7-tetrahydro-8H-indeno[5,4-b]furan-8-ylideneethanenitrile of Formula (I) as an intermediate.
本发明涉及一种制备(2E)-1,2,6,7-四氢-8H-茚并[5,4-b]呋喃-8-基乙腈(化学式(I))的方法。本发明还涉及一种利用(2E)-1,2,6,7-四氢-8H-茚并[5,4-b]呋喃-8-基乙腈(化学式(I))作为中间体制备拉莫替昔的方法。