Nye fenantrider

摘要

Phenanthridine derivatives of formula (I) and their salts are new: R1, R2 = OH, 1-4C alkoxy (optionally substituted by one or more F), 3-7C cycloalkoxy or 3-7C cycloalkylmethoxy; or R1 + R2 together are a 1-2C alkylenedioxy group; R3 = H, 1-4C alkyl or 1-4C alkylene; R4 = H or 1-4C alkyl; R5 = H or a second bond; R6 = phenyl substituted by a group R7; R7 = COOR71 or CONR72R73; R71, R72, R73 = H, 1-7C alkyl, 3-7C cycloalkyl or 3-7C cycloalkylmethyl.