Patent ID: 7314935

Claim:
A compound of the formula 1** where R1 is hydrogen, methyl, cyclopropyl, methoxymethyl or trifluoromethyl, R2 is hydrogen, methyl, chlorine, bromine, ethynyl or trifluoromethyl, R3a is hydrogen, R3b is hydrogen, fluorine, methyl or the —CO—N(CH 3 ) 2 radical, R4a is R41-O, Arom is a phenyl radical, Prot is R41 and R41 is selected from the group consisting of C 1-4 -alkylcarbonyl, C 1-4 -alkoxycarbonyl and C 1-4 -alkoxy-C 1-4 -alkoxycarbonyl, or a salt thereof.