申请人:Takeda Chemical Industries, Ltd.
                            
                            
                                公开号:US04035363A1
                            
                            
                                公开(公告)日:1977-07-12
                            
                            Novel compounds of the formula ##STR1## wherein R.sup.1 is lower alkyl, R.sup.2 is hydrogen, lower alkyl or lower alkenyl, R.sup.3 is hydrogen, lower alkyl, lower alkoxy or halogen and Y is lower alkylene.
                            式##STR1##中的新化合物,其中R.sup.1是较低的烷基,R.sup.2是氢,较低的烷基或较低的烯基,R.sup.3是氢,较低的烷基,较低的烷氧基或卤素,Y是较低的烷基。