| 摘要 |
<p>alpha -Ketol unsaturated fatty acid derivatives represented by the following formula (1), alpha -ketol unsaturated fatty acid amide derivatives represented by the following formula (6), and plant growth regulators containing, as the active ingredient, at least one of these derivatives: <CHEM> wherein R<1> represents linear C1-5 alkyl; R<2> represents hydrogen, etc.; R<3> represents hydrogen, etc.; R<4> represents hydrogen, etc.; R<5> represents hydrogen, etc.; n is an integer from 3 to 15; and the carbon atoms at the A- and B-positions may be in either (R)- or (S)-configuration; and <CHEM> wherein R<7> represents C1-17 alkyl, etc; R<8> represents hydrogen, etc.; R<9> represents alpha -ketolalkylene; and R<10> represents specific divalent linear hydrocarbyl.</p> |
