Patent number: 6750253
Abstract: The present invention relates to compounds of the formula
wherein R1 independently represents one or more, same or different substituents selected from the group consisting of halogen, hydroxy, mercapto, trifluoromethyl, amino, (C1-C3)alkyl, (C2-C3)olefinic group, (C1-C3)alkoxy, (C1-C3)alkylthio, (C1-C6)alkylamino, (C1-C3)alkoxycarbonyl, cyano, carbamoyl, phenyl and nitro, provided that when R1 represents one substituent, it is in the ortho position, and when R1 represents more than one substituent, at least one R1 substituent is in the ortho position; R2 is one substituent in the ortho position, said substituent being selected from the group consisting of hydrogen, halogen, hydroxy, mercapto, trifluoromethyl, amino, (C1-C3)alkyl, (C2-C3)olefinic group, (C1-C3)alkoxy, (C1-C3)alkylthio, (C1-C6)alkylamino, (C1-C3)alkoxycarbonyl, cyano, carbamoyl, phenyl and nitro; R3 represents hydrogen, halogen, hydroxy, mercapto, trifluoromethyl, amino, (C1-C3)alkyl, (C2-C3)olefinic group, (C1-C3)alkoxy, (C1
Type:
Grant
Filed:
February 22, 2002
Date of Patent:
June 15, 2004
Assignee:
Leo Pharmaceutical Products Ltd. A/S
Inventor:
Erik Rytter Ottosen