申请人:Meiji Seika Kaisha, Ltd.
公开号:US05723407A1
公开(公告)日:1998-03-03
A sulfonylsemicarbazide derivative of the general formula (I) is effective as a preservative agent for preserving the freshness of a flower, which can prolong the vase life of the flower petals of cut flowers where the flowers can be enjoyed. ##STR1## wherein R.sup.1 represents a (C.sub.3 -C.sub.4)-alkyl group, a substituted or unsubstituted phenyl group, a pyridyl group, a thio-phenyl group or others, R.sup.2 and R.sup.3 each independently represent a hydrogen atom, a lower alkyl group, an alkoxalyl group, an alkoxyalkyl group, a group of the formula --C(X)--X--R.sup.4 where X means an oxygen atom or a sulfur atom and R.sup.4 means an alkyl group, or other, or R.sup.2 and R.sup.3 may form a heterocyclic ring having 4 to 5 carbon atoms or a group of the formula --N.dbd.CR.sup.5 (R.sup.6), as taken with the --N atom to which R.sup.2 and R.sup.3 are attached.
通式(I)的磺酰基脲衍生物可作为保鲜剂,用于保持鲜花的新鲜度,可以延长切花的花瓣的插花寿命,使人们可以欣赏花的美丽。其中,R1代表(C3-C4)烷基,取代或未取代的苯基,吡啶基,硫代苯基或其他基团,R2和R3各自独立地表示氢原子,低碳基,烷氧基,烷氧基烷基,公式-C(X)-X-R4的基团,其中X表示氧原子或硫原子,R4表示烷基,或其他基团,或R2和R3可以形成具有4至5个碳原子的杂环环或公式-N = CR5(R6)的基团,作为与R2和R3连接的-N原子一起考虑。