摘要 |
Carbamate compounds having a structure represented by formula I (where R<SUP>1</SUP>, R<SUP>2</SUP>, R<SUP>3</SUP>, R<SUP>4</SUP>, R<SUP>5 </SUP>and R<SUP>6 </SUP>are as defined herein) are useful as anti-tumor agents.
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