| 主权项 |
1. A compound of formula (VII)wherein,
R1 represents hydrogen or (C1-C4)-alkyl, R2 represents (C1-C6)-alkyl, (C2-C4)-alkenyl, (C2-C4)-alkynyl or (C3-C7)-cycloalkyl,
where (C1-C6)-alkyl may be substituted by 1 to 3 substituents selected independently of one another from the group consisting of fluorine, chlorine, trifluoromethyl, trifluoromethoxy, (C1-C4)-alkoxy, (C3-C7)-cycloalkyl, (C3-C7)-cycloalkoxy, (C1-C4)-alkylsulfanyl and (C1-C4)-alkylsulfonyl,andwhere (C2-C4)-alkenyl and (C2-C4)-alkynyl may be substituted by 1 or 2 substituents selected independently of one another from the group consisting of fluorine, trifluoromethyl, (C1-C4)-alkyl, trifluoromethoxy and (C1-C4)-alkoxy,andwhere (C3-C7)-cycloalkyl may be substituted by 1 or 2 substituents selected independently of one another from the group consisting of fluorine, chlorine, trifluoromethyl, (C1-C4)-alkyl, trifluoromethoxy and (C1-C4)-alkoxy, or R1 and R2 together with the nitrogen atom to which they are attached form a 4- to 7-membered heterocycle which may contain a further heteroatom from the group consisting of N, O and S,
where the 4- to 7-membered heterocycle may be substituted by 1 or 2 substituents selected independently of one another from the group consisting of fluorine, chlorine, oxo, trifluoromethyl, (C1-C4)-alkyl, trifluoromethoxy and (C1-C4)-alkoxy, R4 represents hydrogen or the side group of a natural α-amino acid or its homologs or isomers, R5 represents hydrogen or methyl, R6A represents hydrogen, (C1-C4)-alkyl, or an amino protective group, R7A represents hydrogen, (C1-C4)-alkyl, or an amino protective group, or R6A and R7A together with the nitrogen atom to which they are attached form a 5- or 6-membered heterocycle,
where the 5- or 6-membered heterocycle may be substituted by 1 or 2 substituents independently selected from the group consisting of (C1-C4)-alkyl, amino, hydroxyl and (C1-C4)-alkoxy, or R7A together with R4 and the atoms, to which they are attached, forms a pyrrolidine or piperidine ring,or a salt thereof. |
