申请人:Toa Eiyo Kagaku Kogyo Co. Ltd.
公开号:US04410716A1
公开(公告)日:1983-10-18
Novel compounds, dibenzo[a,d]cycloheptene derivatives, of the general formula ##STR1## wherein R.sub.1 represents a hydrogen atom, a halogen atom or a lower alkyl group, R.sub.2 and R.sub.3 each represent a hydrogen atom or a lower alkyl group, and Z represents a group of the formula ##STR2## These novel compounds are useful as non-steroidal anti-inflammatory agents free from gastrointestinal lesions. The compounds of formula (I) can be prepared, for example, by cyclizing a compound of the general formula ##STR3## wherein R.sub.1 and R.sub.2 are as defined above, X represents a hydroxyl group or a halogen atom, one Y represents a group of the formula --CH.sub.2 COX and the other Y represents a hydrogen atom; optionally hydrolyzing the cyclized product; and optionally esterifying the product, and/or etherifying its enol group.
新型化合物,二苯并[a,d]环庚烯衍生物,具有一般式##STR1##其中R.sub.1代表氢原子、卤素原子或较低的烷基基团,R.sub.2和R.sub.3各自代表氢原子或较低的烷基基团,Z代表具有式##STR2##的基团。这些新型化合物可用作无胃肠道损伤的非甾体类抗炎药。例如,可以通过使一般式##STR3##的化合物环化来制备式(I)的化合物,其中R.sub.1和R.sub.2如上定义,X代表羟基或卤素原子,一个Y代表式--CH.sub.2 COX的基团,另一个Y代表氢原子;可选择地水解环化产物;并可选择地对产物酯化,和/或醚化其烯醇基团。