| 摘要 |
The present invention relates to a compound of the general formula <CHEM> wherein m is 0 to 9, and R<1a>, R<2a>, R<3a> and R<4a> are the same or different and each is a hydrogen or an acyl, with the proviso that m is not 4; a pharmaceutically acceptable acid addition salt thereof or a hydrate thereof; a pharmaceutical comprising this compound; and a pharmaceutical composition comprising this compound and a pharmaceutically acceptable carrier. The compound of the present invention shows superior immunosuppressive action with less toxicity and higher safety, and is useful as a drug for preventing or suppression of rejection of organs or bone marrow transplantation, or as a drug for prevention or treatment of various autoimmune diseases or allergic diseases. |
