| 摘要 |
<p>//c-D-Galacturonide derivatives, represented by the following general formula (I), and the salts thereof, as well as late blight-controlling agents containing them as effective ingredients. (FORMULA) [wherein R<s1>s represents an alkyl group containing 1-8 carbon atoms, alkenyl group containing 2-8 carbon atoms, cycloalkyl group containing 3-8 carbon atoms, aryl group, or 5- or 6-membered unsaturated hetero ring residue; R<s2>s represents a hydrogen atom or a methyl group; and A represents an oxygen atom or sulphur atom. The hydroxyl group bound to the carbon atom in the4-position of the galacturonide skeleton and the hydrogen atom bound to the carbon atom in the 5-position may be eliminated to form a double bond between the 4- and 5-positions]. The compounds of general formula (I) are prepared according to processes illustrated by the following reaction formulae: Reaction formula 1 (FORMULA) Reaction formula 2 (FORMULA) Reaction formula 3 (FORMULA) [In the above formulae, R<s3>s represents a protective group for the OH groups.]</p> |
