C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 221/18 (2006.01)
Patent
CA 2111955
The present invention relates to a novel tetracyclic compound represented by formula (I) (See formula I) (wherein each of X1 and X2 independently represents hydrogen or lower alkyl; n represents an integer of 1 to 4), or a pharmaceutically acceptable salt thereof,.which is useful as immunosuppressive agents.
Nakajima Hiroshi
Nakasato Yoshisuke
Ohmori Kenji
Sato Soichiro
Suzuki Fumio
Goudreau Gage Dubuc
Kyowa Hakko Kogyo Co. Ltd.
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