Compounds corresponding to the general formula: ##STR1## in which R represents hydrogen, an alkyl radical, a halogenated alkyl radical, a cycloalkyl radical, an optionally substituted aryl radical, an optionally substituted aralkyl radical, an acyl radical, aroyl radical or an optionally substituted heterocycle; R.sub.3 represents hydrogen, aralkyl radical containing 1 to 5 carbon atoms; R.sub.2 represents hydrogen, an alkyl radical (optionally halogenated or substituted by a hydroxyl), a formyl radical, an acyl radical, a carbamoyl radical monosubstituted or disubstituted on the nitrogen; R and R.sub.2 cannot both represent hydrogen; X represents oxygen or sulphur, and their salts, especially their sulphonium salts. Such compounds are useful for modifying the growth of plants.
化合物对应于一般式:##STR1## 其中R代表氢,烷基基团,卤代烷基基团,环烷基基团,可选取代芳基基团,可选取代芳基基团,酰基基团,芳酰基团或可选取代的杂环基; R.sub.3代表氢,含有1至5个碳原子的芳基基团; R.sub.2代表氢,烷基基团(可选取代或卤代或羟基取代),甲酰基基团,酰基基团,单取代或双取代氮上的
氨基甲酰基基团; R和R.sub.2不能同时代表氢; X代表氧或
硫,以及它们的盐,特别是它们的
磺酸盐。这些化合物对于改变植物的生长是有用的。