申请人:Teva Pharmaceuticals Industries, Ltd.
公开号:US06339156B1
公开(公告)日:2002-01-15
A novel process for preparing a compound of the formula I:
wherein
R1 denotes substituted or unsubstituted alkyl, alkoxy, aryl, aryloxy or arylalkoxy; R2 denotes substituted or unsubstituted alkyl, alkoxy, aryl, aryloxy, arylalkoxy, tosyl, formyl, acetyl or amine; and R3 denotes substituted or unsubstituted alkyl, alkoxy, aryl, aryloxy or arylalkoxy is disclosed. These compounds are useful in the synthesis of the antidepressant mirtazapine and other tetracyclic compounds.
本发明公开了一种制备式I化合物的新工艺:其中,R1表示取代或未取代的烷基、烷氧基、芳基、芳氧基或芳基烷氧基;R2表示取代或未取代的烷基、烷氧基、芳基、芳氧基、芳基烷氧基、对甲苯磺酰基、甲酰基或胺基;R3表示取代或未取代的烷基、烷氧基、芳基、芳氧基或芳基烷氧基。这些化合物在合成抗抑郁药米氮平和其他四环类化合物中很有用。