| 摘要 |
Novel .alpha.-amino acid amides of formula (I) as well as possible isomers and mixtures of isomers thereof, wherein the substituents are defined as follows: n is the number zero or one; R1 is optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkylalkyl, aryl or arylalkyl; or a group NRaRb wherein Ra and Rb are each independently of the other hydrogen, alkyl or form together an alkylene bridge; R2 is hydrogen or alkyl; R3 is optionally substituted aryl or heteroaryl; A is alkylene; and B is optionally substituted aryl; with the exception of the following compounds 2-phenyl-N- (1-phenyl-ethyl)- 2-(4-methylphenyl)- sulfonylamino-acetamide, 2-phenyl- N-(1-phenyl-ethyl)- 2-(4-chlorophenyl)- sulfonylamino-acetamide, 2-phenyl- N-(1-phenyl-ethyl)- 2-(4-nitrolphenyl)- sulfonylamino-acetamide, 2-phenyl- N-(1-phenyl-ethyl)- 2-(4-methoxyphenyl)- sulfonylamino-acetamide, 2-phenyl- N-(1-phenyl-ethyl)- 2-(4-fluorophenyl)- sulfonylamino-acetamide, 2-phenyl- N-(1-phenyl-ethyl)- 2-phenyl-sulfonylamino- acetamide and 2-phenyl-N-(1-phenyl-ethyl)-2-methane-sulfonylamino-acetamide. The novel compounds have plant-protective properties and are suitable for protecting plants against infestations by phytopathogenic microorganisms, in particular fungi.
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