| 摘要 |
Compounds of general formula (I), salts of the same, and solvates of both; a nd drug compositions containing them: wherein X and X' are each -N(COOCR3R2OCOR 1)- , -O-, or the like (wherein R1 is lower alkyl substituted with carbamoyl, lower alkylcarbamoyl, carbamoyloxy, lower alkylcarbamoyloxy, acetylamino, or the like; and R2 and R3 are each hydrogen or the like); Y and Y' are each lower alkyl, lower alkenyl, or the like; A, B and C are each an optionally substituted aromatic carbocycle, an optionally substituted heterocycle, or t he like; W1, W2, and W3 are each a bond or the like; and V1 and V2 are each a single bond or the like.
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