| 摘要 |
This invention discloses a group of compounds of formula (I) <CHEM> wherein R<1> is hydrogen, halo, C1-4 alkyl, C1-4 alkoxy COOR<4> (R<4> is H or C1-4 alkyl) or trifluoromethyl; R<2>, R<5> and R<6> are the same or different and can be hydrogen, hydroxy, OCOR<7> (wherein R<7> is hydrogen, C1-4 alkyl, phenyl optionally substituted) or halo; and R<3> is hydrogen, COR<4>, C3-6 cycloalkyl or C1-4 alkyl or alkenyl; R<2> may also be a phosphate group and pharmaceutically acceptable salts thereof which have been found to have analgesic activity. In addition, these compounds have antiinflammatory, antipyretic, antihypertensive and vasodilatory activity in varying degrees. Some of these compounds also have antiprotozoal and antiviral properties. |
