| abstract |
Compounds having the formula <IMAGE> wherein R is hydrogen, or chlorine, or alkyl having one to 4 carbons, or alkoxy having one to 3 carbons, and R1 is hydrogen, or <IMAGE> or -CONH-R3, wherein R2 is hydrogen, or chlorine, or nitro, or alkoxy having no more than 3 carbons, or trifluoromethyl, and R3 is alkyl having one to 4 carbons, or cycloalkyl having no more than 6 carbons, or phenyl. |