Cytotoxic benzodiazepine derivatives and methods of preparation
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United States of America Patent
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Jan 3, 2017
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Feb 15, 2012
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Feb 15, 2011
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Abstract
The invention relates to novel benzodiazepine derivatives with antiproliferative activity and more specifically to novel benzodiazepine compounds, such as those in formulas (V)-(VII). The invention also provides conjugates of the benzodiazepine compounds linked to a cell-binding agent. The invention further provides compositions and methods useful for inhibiting abnormal cell growth or treating a proliferative disorder in a mammal using the compounds or conjugates of the invention. The present invention is further directed to methods of preparing a conjugate of a cell-binding agent and a cytotoxic compound. The methods comprise the use of an imine reactive compound to enable efficient conjugations of cytotoxic compounds with cell binding agents.
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