| 摘要 |
Disclosed is a use of a compound of the formula: (see fig. I) (wherein n is 1-3; A is O, S, CH2, NH or N-alkyl; B is CR4R5 where R4 and R5 are H, alkyl, R6R7-alkyl or R6R7-alkoxy in which R6 and R7 are H, alkyl, cycloalkyl, aryl or heteroaryl or R4 and R5 together with the C atom form cycloalkyl; R1 is tetrazolyl, carboxyl, carboxyalkenyl, alkyl cycloalkyl, etc. and R2 is H, F, Cl, alkyl, alkoxy, etc.), or a pharmaceutically acceptable salt thereof for suppressing the rejection of allogenic transplants in a mammal, including a human.
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