Carbamide compound and its medicinal usage

The invention relates to a compound as shown in the general formula I, or its isomer, medicinal salt and solvate; the invention also relates to a composition containing the compound as shown in the general formula I or its isomer, medicinal salt and solvate as well as a pharmaceutically acceptable carrier, excipient or diluent; the invention also relates to the usage of the compound as shown in the general formula I, or its isomer, medicinal salt and solvate in resisting cell apoptosis and preventing or treating diseases or symptoms related with cell apoptosis, especially to the usage in protecting cardiomyocytes and preventing or treating diseases or symptoms related with cardiomyocyte apoptosis.