DIBENZ B,F 1,4 OXAZEPIN-11(10H)-ONES FOR MULTIDRUG RESISTANCE REVERSING AGENTS

摘要

This invention relates to a compound of formula I wherein p is 1 to 3; R<1> and R<2> each are independently hydrogen or an acyl group R<6>CO-, in which R<6> is C1-6 alkyl, C3-7 cycloalkyl, C2-7 alkenyl, aryl or radical of the formula R<3> is hydrogen or chloro; R<4> and R<5> each are independently C1-6 alkyl. Compounds of formula I are useful for the reversal of multidrug resistance of cancer drugs.