abstract |
The present invention relates to a compound of the formula: <EMI FILE = "99017143_1" ID = "1" MFI = JPEG> Where W denotes CH or N, V denotes CH or NO, R1 denotes hydrogen, acid, carboxyl, or alkyl, R3 denotes hydrogen or an ester fraction, R2 denotes a group of the formula: <EMI FILE = "99017143_2" ID = "2" IMF = JPEG> |