[EN] NEW PROCESS FOR THE SYNTHESIS OF MOGUISTEINE<br/>[FR] NOUVEAU PROCÉDÉ POUR LA SYNTHÈSE DE MOGUISTÉINE
申请人:A M S A ANONIMA MATERIE SINT E
公开号:WO2009071528A2
公开(公告)日:2009-06-11
The invention relates to a process for the synthesis of moguisteine that is ethyl ester of (R,S)-3-[2-[(2-methoxyphenoxy)methyl]-1,3-thiazolidin-3-yl]-3-oxypropanoic acid which comprises the steps of forming a new cyclic intermediate of formula 2-[(2-methoxyphenoxy)methyl]-1,3-dioxolane (4), forming (R,S)-2-[(2-methoxyphenoxy)methyl]-1,3-thiazolidine (6) and reacting this latter with monoethylmalonic acid (7) or a salt thereof. The moguisteine of the invention is obtained in high yield and purity.
本发明涉及一种用于合成莫骨烷的过程,即(R,S)-3-[2-[(2-甲氧基苯氧基)甲基]-1,3-噻唑环-3-基]-3-氧代丙酸乙酯,包括以下步骤:形成新的环状中间体2-[(2-甲氧基苯氧基)甲基]-1,3-二氧兰(4),形成(R,S)-2-[(2-甲氧基苯氧基)甲基]-1,3-噻唑环(6),并将后者与单乙酯丙二酸(7)或其盐反应。本发明所述的莫骨烷可高产高纯地得到。