| 摘要 |
2-Cyano-3,5-dihydroxy-hex-2-ene carboxylic acid amides of formula (I), their stereoisomers and salts are new. R1 = H or 1-4C alkyl; R2 = 1-12C alkyl, 2-12C alkenyl, 2-12C alkynyl, 3-7C cycloalkyl, a 4-7 membered heterocycle with 1 or 2 heteroatoms (O, N or S); phenyl (optionally once to threefold substituted by 1-4C alkyl, halo, CN, CF3, 1-4C alkoxy (itself optionally substituted by phenyl) or methylenedioxy); or 1-6C alkyl, 2-6C alkenyl or 2-6C alkynyl each mono-substituted by phenyl or a group of formula (i); or R1+R2 = O; R3 = H, CF3, OCF3, SCF3, OH, NO2, halo, benzyl, phenyl or CN; or is phenoxy optionally substituted by one or more 1-4C alkyl, halo, OCF3 or OCH3; R4 = H, 1-4C alkyl or halo; R5, R6 = H or 1-4C alkyl; n = 0-4. |
