| 摘要 |
<p>NEW MATERIAL:Compounds represented by the formula (R is H or amino- protective group; Y is lower alkyl, phenyl, phenylalkyl, hydroxyalkyl or phenylalkyloxyalkyl; X is sulfo, mesyl, tosyl or halogen) and salts thereof. EXAMPLE:(S)-2-aminopropane-1-sulfonic acid. USE:An agent for agricultural technology and horticulture, etc., having plant growth regulating effects such as enriching and thickening of the above ground part of a plant. PREPARATION:An aminoalcohol compound of the formula (X is OH) is reacted with a methanesulfonyl chloride in the presence of a base such as triethylamine in a solvent such as methylene chloride for mesylation to obtain a compound of formula I where X is mesyl in this case. In case the amino group of the resultant compound is protected, the protective group is removed. Sulfonation is then carried out by a reaction with Na2SO3, ammonium sulfate, etc., in a solvent such as water, thus obtaining a compound of formula I where X is sulfo in this case.</p> |
