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2-取代氨基环烷基磺酰胺合成与杀菌活性构效关系研究

发布时间:2018-01-10 17:09

  本文关键词:2-取代氨基环烷基磺酰胺合成与杀菌活性构效关系研究 出处:《沈阳农业大学》2017年硕士论文 论文类型:学位论文


  更多相关文章: 2-取代氨基环烷基磺酰胺 N-烷基化反应 化学合成 杀菌活性 构效关系


【摘要】:以具有很好杀菌活性的环己磺菌胺为先导化合物,经过还原氨化制备得到中间体2-氨基环烷基磺酰胺,再与卤代烷烃、取代苄溴、2-氯乙基苯、3-氯丙基苯、2-卤代乙酸酯、5-氯甲基吡啶、5-氯甲基噻唑、N-取代-2-氯乙酰胺进行N-烷基化反应合成了八种不同类型的2-取代氨基环烷基磺酰胺共59个化合物(Ⅳ-1~Ⅳ-59)。所有化合物的结构均通过核磁氢谱、核磁碳谱、高分辨质谱、元素分析、红外谱图确认,此外,Ⅳ-8,Ⅳ-16,ⅣV-47这三个化合物还通过了 X-射线单晶衍射的确认。采用菌丝生长抑制法对所有化合物进行杀菌谱筛选,杀菌谱筛选试验对象有黄瓜灰霉菌(Botrytsic cinerea)、水稻稻瘟菌(Pyricularia grisea)、水稻纹枯菌(Rhizoctoniasolani Kuhn)、小麦根腐病菌(Bipolari sorokiniana)、辣椒疫霉(Phytophthora capsici)、禾谷镰刀菌(Fusarium graminearum Schw.)、玉米大(Exserohilum turcicum(Pass.)Leonard et Suggs)共七种病原菌,筛选结果显示化合物对黄瓜灰霉菌和水稻稻瘟菌有很高的防效,在50μg/mL下,有28个化合物对灰霉菌的抑制率达到70%以上,有5个化合物对水稻稻瘟菌的抑制率是100%。为进一步验证目标化合物对灰霉菌和稻瘟菌的活性,对其进行了杀菌毒力测定。选用三种采自辽宁省不同地区的黄瓜灰霉菌株CY-09,HLD-15,DL-11以及稻瘟菌。杀菌毒力测定结果表明:取代基是取代苄基、取代苯乙基、取代甲基噻唑以及N-取代-2-氯乙酰胺这四类时化合物表现较高的抑制活性,其中表现最好的是5-氯甲基噻唑类,以化合物Ⅳ-24为例:对CY-09,HLD-15,DL-11三种灰霉菌的EC50值分别是3.17μg/mL,1.41 μg/mL,2.37 μg/mL 均低于对照药剂腐霉利(10.3 μg/mL,6.03 μg/mL,4.04 μg/mL)、嘧霉胺(-,3.88 μg/mL,2.79 μg/mL)的EC50值,与啶酰菌胺和嘧菌环胺相比也有很好的抑制效果。此外,其对稻瘟菌的EC50值是4.62μg/mL低于对照药剂稻瘟灵的(EC50=6.11μg/mL)。采用活体盆栽法对化合物进行活体试验,结果表明:在黄瓜活体盆栽试验中有6个化合物的抑制率达到90%,而对照药剂的抑制率分别是多菌灵(59.6%),腐霉利(83.5%),嘧霉胺(82.0%),嘧菌环胺(88.6%),再番茄活体盆栽试验中,化合物ⅣV-38(88.1%),ⅣV-39(79.0%),ⅣV-41(87.8%)的防治效果均高于啶酰菌胺(78.2%),嘧霉胺(50.4%),腐霉利(65.7%)。综合离体和活体条件下的生物活性,选出活性较高的化合物Ⅳ-24对其进行室内初步药害试验。试验表明:在高浓度700μg/mL时,化合物Ⅳ-24对番茄幼苗和黄瓜幼苗的株高和叶片量均未产生药害。构效关系研究表明:取代基R3为烷烃类和羧酸脂类时化合物活性较低;胺基与苯环之间的碳链长度对活性影响较大,取代苯乙基的活性取代苄基取代苯丙基的活性,苯环上连有氟原子、溴原子等化合物活性有明显提高;取代甲基噻唑和取代甲基吡啶作为两类杂环取代基,均具有较高的活性,但取代噻唑类的活性明显高于取代吡啶类;N-取代-2-氯乙酰胺类化合物总体活性很高,但当取代基在3-位和5-位时化合物基本无活性,取代基在苯环的2-位和4-位时,化合物活性较高,氟和溴原子连接在2-位和4-位时活性最高;改变环烷基结构(R1)发生变化时活性也有很大变化,六元环的活性高于五元环和七元环,环烷基上连接的取代基团越大活性越差。本论文对2-氨基环烷基磺酰胺进行衍生化合成和杀菌活性测定,最终筛选出两类活性优异的取代基,分别是取代甲基噻唑类和N-取代-2-氯乙酰胺类,这些研究为后续的研发奠定了基础。
[Abstract]:To have good bactericidal activity of cyclohexyl sulfonyl amine bacteria as the lead compound through the reductive amination of prepared intermediate 2- amino naphthene sulfamide, and halogenated hydrocarbons, substituted benzyl bromide, 2- chloride, ethyl benzene, propyl benzene chloride 3-, 2- haloacetate, 5- chloromethylpyridine, 5- chloromethyl thiazole. N- replace -2- chloroacetamides N- alkylation of eight different types of synthesis of 2- substituted amino naphthene sulfamide 59 compounds (IV -1 ~ IV -59). The structures of these compounds were characterized by 1H NMR, 13C NMR, MS and elemental analysis, infrared spectra confirmed, in addition -8 -16, IV, IV, IV V-47 these three compounds are also confirmed by the X- ray diffraction. The mycelium growth inhibition method for screening of all compounds bactericidal spectrum, spectrum bactericidal screening test object Botrytis cinerea (Botrytsic cinerea), rice (rice blast fungus Pyricularia grisea ), Rhizoctonia solani (Rhizoctoniasolani Kuhn), wheat root rot (Bipolari sorokiniana), Phytophthora capsici (Phytophthora capsici), Fusarium graminearum (Fusarium graminearum Schw.), maize (Exserohilum turcicum Leonard ET (Pass.) Suggs) a total of seven kinds of pathogenic bacteria, screening results showed that the control effect of compound is very high cucumber grey mold and rice blast bacteria, 50 g/mL, 28 compounds inhibited the Botrytis cinerea rate reached more than 70%, there are 5 compounds on the inhibition of rice blast bacteria rate is 100%. for further validation purpose activity compounds on Botrytis cinerea and Magnaporthe grisea, the the sterilization toxicity test selected three collected from different areas of Liaoning Province Botrytis cinerea strains CY-09, HLD-15, DL-11 and Magnaporthe grisea were measured. The results show that the substituent is bactericidal toxicity of substituted benzyl, substituted phenyl substituted ethyl, methyl thiazole and N- substituted -2- chloride 涔欓叞鑳鸿繖鍥涚被鏃跺寲鍚堢墿琛ㄧ幇杈冮珮鐨勬姂鍒舵椿鎬,

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