申请人:Kyowa Hakko Kogyo Co., Ltd.
公开号:US05371225A1
公开(公告)日:1994-12-06
The present invention relates to novel tetracyclic compounds represented by formula (I) ##STR1## (wherein each of X.sup.1 and X.sup.2 independently represents hydrogen or lower alkyl; n represents an integer of 1 to 4), or a pharmaceutically acceptable salt thereof, which are useful as immunosuppressive agents.
本发明涉及一种新型四环化合物,其化学式表示为(I)##STR1##(其中X.sup.1和X.sup.2各自独立地代表氢或较低的烷基;n代表1至4的整数),或其药学上可接受的盐,其作为免疫抑制剂具有用途。