农药学学报
農藥學學報
농약학학보
CHINESE JOURNAL OF PESTICIDE SCIENCE
2007年
4期
411-414
,共4页
冉兆晋%车超%李楠%肖玉梅%覃兆海
冉兆晉%車超%李楠%肖玉梅%覃兆海
염조진%차초%리남%초옥매%담조해
吡啶衍生物%仲丁胺%1,3,4-噻二唑,除草活性
吡啶衍生物%仲丁胺%1,3,4-噻二唑,除草活性
필정연생물%중정알%1,3,4-새이서,제초활성
pyridine derivatives%sec-butylamine%1,3,4-thiodiazole%herbicidal activity
2-仲丁胺基-5-(2-氯吡啶-4-基)-1,3,4-噻二唑(BCPT)是早期发现的一个具有良好除草活性的外消旋先导化合物,报道了使用R/S-仲丁胺为原料分别合成BCPT的两个对映异构体的方法.初步生测结果显示,3种噻二唑化合物(外消旋体和两个对映异构体)对稗草的根和茎均表现出较强的抑制作用,其中S-(+)对映异构体对茎的抑制作用强于R-(-)对映异构体和外消旋体,但对根的生长抑制作用三者间没有显著差异.
2-仲丁胺基-5-(2-氯吡啶-4-基)-1,3,4-噻二唑(BCPT)是早期髮現的一箇具有良好除草活性的外消鏇先導化閤物,報道瞭使用R/S-仲丁胺為原料分彆閤成BCPT的兩箇對映異構體的方法.初步生測結果顯示,3種噻二唑化閤物(外消鏇體和兩箇對映異構體)對稗草的根和莖均錶現齣較彊的抑製作用,其中S-(+)對映異構體對莖的抑製作用彊于R-(-)對映異構體和外消鏇體,但對根的生長抑製作用三者間沒有顯著差異.
2-중정알기-5-(2-록필정-4-기)-1,3,4-새이서(BCPT)시조기발현적일개구유량호제초활성적외소선선도화합물,보도료사용R/S-중정알위원료분별합성BCPT적량개대영이구체적방법.초보생측결과현시,3충새이서화합물(외소선체화량개대영이구체)대패초적근화경균표현출교강적억제작용,기중S-(+)대영이구체대경적억제작용강우R-(-)대영이구체화외소선체,단대근적생장억제작용삼자간몰유현저차이.
Both enantiomers of 2-sec-butylamino-5-(2-chloropyrid-4-yl)-1,3,4-thiodiazoles (BCPT),a powerful racemic herbicidal compound which was found in previous research,were synthesized from R-and S-butylamine respectively. The preliminary bioassay results showed that three of the thiodiazoles (racemate and enantiomers) were excellent growth inhibitors to both roots and stems of barnyard grass.The S-( + ) enantiomer was the strongest for stem growth inhibition,and R-(-) enantiomer was the
weakest. But they had little inhibiting difference on root growth.