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公开(公告)号:US4013679A
公开(公告)日:1977-03-22
申请号:US591763
申请日:1975-06-30
IPC分类号: C07D487/06
CPC分类号: C07D487/06
摘要: This invention relates to compounds of the formula: ##STR1## wherein R.sub.1 and R.sub.2 may be the same or different and include hydrogen, methyl, and benzyl, their method of preparation, and pharmaceutical compositions containing these compounds.