CN115232101B - 一种1-酰氧基芝麻酚类衍生物及其制备方法和应用 - Google Patents
一种1-酰氧基芝麻酚类衍生物及其制备方法和应用 Download PDFInfo
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D317/00—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D317/08—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
- C07D317/44—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D317/46—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 ortho- or peri-condensed with carbocyclic rings or ring systems condensed with one six-membered ring
- C07D317/48—Methylenedioxybenzenes or hydrogenated methylenedioxybenzenes, unsubstituted on the hetero ring
- C07D317/50—Methylenedioxybenzenes or hydrogenated methylenedioxybenzenes, unsubstituted on the hetero ring with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to atoms of the carbocyclic ring
- C07D317/54—Radicals substituted by oxygen atoms
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
- A01N43/24—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with two or more hetero atoms
- A01N43/26—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with two or more hetero atoms five-membered rings
- A01N43/28—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with two or more hetero atoms five-membered rings with two hetero atoms in positions 1,3
- A01N43/30—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with two or more hetero atoms five-membered rings with two hetero atoms in positions 1,3 with two oxygen atoms in positions 1,3, condensed with a carbocyclic ring
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P3/00—Fungicides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
- C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
- C07D405/12—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a chain containing hetero atoms as chain links
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Engineering & Computer Science (AREA)
- Pest Control & Pesticides (AREA)
- Environmental Sciences (AREA)
- Plant Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Agronomy & Crop Science (AREA)
- Microbiology (AREA)
- Mycology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
本发明公开了一种1‑酰氧基芝麻酚类衍生物及其制备方法和应用,该衍生物的结构通式如式(Ⅰ)所示:式(Ⅰ)中:取代基R选自Ph、(o‑Me)Ph、(m‑Me)Ph、(p‑Me)Ph、(p‑OMe)Ph、(p‑tert‑butyl)Ph、(o‑Cl)Ph、(p‑Cl)Ph、(o‑Br)Ph、(p‑Br)Ph、(p‑NO2)Ph、3‑Pyridyl、4‑Pyridyl、1‑Naphthylmethylene。经研究证明,本发明公开的1‑酰氧基芝麻酚类衍生物对植物病原真菌/卵菌具有显著的抑菌活性,其中部分化合物抑菌活性超过现已上市的抗菌剂恶霉灵,可用于制备植物源杀菌剂。
Description
技术领域
本发明属于植物源农药技术领域,涉及一种1-酰氧基芝麻酚类衍生物及其制备方法以及该1-酰氧基芝麻酚类衍生物在制备新型高效植物病原真菌/卵菌抗菌剂中的应用。
背景技术
芝麻酚,即3,4-亚甲二氧基苯酚,为一种天然的酚类化合物。芝麻酚活性广谱,具有良好的抑菌和抗氧化活性,为多种药品合成的重要原料。例如,芝麻酚为农药增效剂胡椒基丁醚的合成原料;亦可用于合成抗肿瘤药物VP-16与VM-26、抗心血管病药物ACEI和抗忧郁症药物帕罗西汀(Paroxetine)等。
芝麻酚对α-糖苷酶和乙酰胆碱酯酶的抑制作用研究已有文献报道,如TopalMeryem评估了芝麻酚对乙酰胆碱酯酶和α-糖苷酶的抑制作用,表明芝麻酚对这两种代谢酶都表现出非竞争性抑制(TopalMeryem,The inhibition profile of sesamolagainst alpha-glycosidase and acetylcholinesterase enzymes,InternationalJournal of Food Properties,2019,22(1):1527-1535)。芝麻酚磺酸酯类衍生物杀粘虫(Mythimna separate Walker)活性方面的研究已有文献报道,如CheZhiping等报道了芝麻酚磺酸酯类衍生物的合成及其杀粘虫活性方面的研究(Che Zhiping,Yang Jinming,ShanXijie,Tian Yuee,Liu Shengming,Lin Xiaomin,Jiang Jia,Hu Mei,Chen Genqiang,Synthesis and insecticidal activity of sulfonatederivatives of sesamolagainst Mythimna separatain vivo,Journal of Asian Natural ProductsResearch,2020,22(7):678-688)。
芝麻酚活性广谱,如抑菌活性、抗氧化活性、抗肿瘤活性等,然而1-酰氧基芝麻酚类衍生物的合成及其在抗植物病原真菌/卵菌活性方面的研究还未见报道。
发明内容
本发明的目的在于提供一种1-酰氧基芝麻酚类衍生物及其制备方法和应用。本发明研究表明,1-酰氧基芝麻酚类衍生物具有显著的抗植物病原真菌/卵菌活性,能够用于制备植物病原真菌/卵菌抗菌剂。
为实现上述任务,本发明是通过下列技术措施得以实现:
1-酰氧基芝麻酚类衍生物,该衍生物的结构通式如式(Ⅰ)所示:
式(Ⅰ)中:取代基R选自Ph、(o-Me)Ph、(m-Me)Ph、(p-Me)Ph、(p-OMe)Ph、(p-tert-butyl)Ph、(o-Cl)Ph、(p-Cl)Ph、(o-Br)Ph、(p-Br)Ph、(p-NO2)Ph、3-Pyridyl、4-Pyridyl、1-Naphthylmethylene。
在结构通式(Ⅰ)中按表1对应取代基R,得到1-酰氧基芝麻酚类衍生物1~14。
表1:本发明制备的1-酰氧基芝麻酚类衍生物1~14对应取代基R
上述1-酰氧基芝麻酚类衍生物的制备方法,首先将不同羧酸酰溴化合成对应的酰溴,不需纯化,酰溴进一步与芝麻酚的羟基发生酯化反应得到。
作为一种优选技术方案,不同羧酸与芝麻酚的摩尔比为1.0~1.5:1.0。
作为一种优选技术方案,将不同羧酸酰溴化合成对应的酰溴的方法为:将不同羧酸与三苯基膦(PPh3)和三溴甲基苯砜(Br3CSO2Ph)在溶剂中反应至结束合成对应的酰溴。进一步优选的,所述不同羧酸、三苯基膦(PPh3)和三溴甲基苯砜(Br3CSO2Ph)的摩尔比为1.0:1.2:1.0。
进一步优选的,所述的不同羧酸选自:苯甲酸、2-甲基苯甲酸、3-甲基苯甲酸、4-甲基苯甲酸、4-甲氧基苯甲酸、4-叔丁基苯甲酸、2-氯苯甲酸、4-氯苯甲酸、2-溴苯甲酸、4-溴苯甲酸、4-硝基苯甲酸、烟酸、异烟酸和萘乙酸。
进一步优选的,所述的溶剂为纯二氯甲烷;最优选的,整个反应体系中二氯甲烷的浓度为1M。
作为一种优选技术方案,所合成的酰溴不需纯化,直接向酰溴反应液中加入芝麻酚和三乙胺(Et3N)继续反应至结束得到1-酰氧基芝麻酚类衍生物。进一步优选的,所述芝麻酚与三乙胺(Et3N)的摩尔比为1.0:1.5。
上述的1-酰氧基芝麻酚类衍生物在防治植物病原真菌或/和卵菌方面的应用。
上述的1-酰氧基芝麻酚类衍生物在制备植物病原真菌或/和卵菌抗菌剂中的应用。
上述的1-酰氧基芝麻酚类衍生物在制备植物源杀菌剂中的应用。
进一步优选的,上述1-酰氧基芝麻酚类衍生物制备方法详细过程为:
首先,将一定量的不同羧酸溶于纯二氯甲烷中(整个反应体系中二氯甲烷的浓度为1M),再加入一定量的PPh3和Br3CSO2Ph,在室温下反应一定时间,TLC跟踪监测至反应结束。反应结束后,生成的酰溴不需纯化,进一步在反应液中加入一定量的芝麻酚和三乙胺(Et3N),室温继续反应一定时间,以TLC检测为准,二氯甲烷萃取,无水硫酸钠干燥,分离的目标产物(Ⅰ)。
本发明所述的室温为25±10℃。
本发明的有益效果:
经实验证明,1-酰氧基芝麻酚类衍生物具有显著的抗植物病原真菌或/和卵菌活性,可在制备新型高效植物病原真菌或/和卵菌抗菌剂中应用。
附图说明
图1为化合物1的氢谱;
图2为化合物2的氢谱;
具体实施方式
以下结合附图和实施例对本发明做进一步详细阐述。
鉴于1-酰氧基芝麻酚类衍生物具有较强的理论和应用价值,申请人制备了1-酰氧基芝麻酚类衍生物,并进行体外抗植物病原真菌/卵菌活性研究;结果表明,该1-酰氧基芝麻酚类衍生物具有显著的抗植物病原真菌/卵菌活性,能够用于制备植物病原真菌/卵菌抗菌剂。根据申请人所进行的资料检索,目前还未见文献报道。
以下是发明人给出的具体实施例。
实施例1:1-酰氧基芝麻酚类衍生物1~14
在结构通式中按表1对应取代基R,可以得到1-酰氧基芝麻酚类衍生物1~14。
一、产品:1-酰氧基芝麻酚类衍生物1~14(各化合物理化性质详见以下内容)。
二、制备方法:
首先,在100mL烧瓶中加入不同取代的羧酸(1.0equiv)溶于纯二氯甲烷中(整个反应体系中二氯甲烷的浓度为1M),后加入PPh3(1.2equiv)和Br3CSO2Ph(1.0equiv),在室温下反应2-6h;TLC跟踪监测至反应结束后,生成的酰溴不需纯化,进一步加入芝麻酚(1.0equiv)和Et3N(1.5equiv),室温继续反应6-10h。以TLC检测为准,反应结束后,加入10mL的水(萃取时要求有机溶剂的体积是水体积的三倍;因此,水如果加太多会浪费有机溶剂,不利于节约成本),并用二氯甲烷萃取,合并有机相,后用饱和食盐水洗,最后用无水硫酸钠干燥。浓缩蒸干溶剂后经硅胶柱层析法分离得到目标产物1~14,产率为63~90%。
反应通式如下:
化合物1:
该化合物的理化性质如下:
1)、白色固体,熔点80~83℃,产率为69%。
2)、该化合物的核磁共振图谱(1H NMR,400MHz)特征:
以氘代CDCl3为溶剂,TMS为内标物,其中各峰归属为:δ:8.16-8.19(m,2H),7.61-7.65(m,1H),7.48-7.52(m,2H),6.83(d,J=8.4Hz,1H),6.73(d,J=2.4Hz,1H),6.66(dd,J=8.4Hz,2.4Hz,1H),6.00(s,2H)。
3)、该化合物的HRMS(ESI):Calcd for C14H11O4([M+H]+),243.0652;found,243.0655。
4)、反应式为:
化合物2:
该化合物的理化性质如下:
1)、浅黄色油状液体,产率为87%。
2)、该化合物的核磁共振图谱(1H NMR,400MHz)特征:
以氘代CDCl3为溶剂,TMS为内标物,其中各峰归属为:δ:8.11-8.14(m,1H),7.45-7.49(m,1H),7.29-7.33(m,2H),6.83(d,J=8.4Hz,1H),6.72(d,J=2.4Hz,1H),6.65(dd,J=8.4Hz,2.4Hz,1H),6.00(s,2H),2.66(s,3H)。
3)、该化合物的HRMS(ESI):Calcd for C15H13O4([M+H]+),257.0808;found,257.0812。
4)、反应式为:
化合物3:
该化合物的理化性质如下:
1)、无色油状液体,产率为78%。
2)、该化合物的核磁共振图谱(1H NMR,400MHz)特征:
以氘代CDCl3为溶剂,TMS为内标物,其中各峰归属为:δ:7.96-7.99(m,2H),7.36-7.45(m,2H),6.82(d,J=8.4Hz,1H),6.72(d,J=2.4Hz,1H),6.58(dd,J=8.4Hz,2.4Hz,1H),6.00(s,2H),2.43(s,3H)。
3)该化合物的HRMS(ESI):Calcd for C15H13O4([M+H]+),257.0808;found,257.0808。
4)、反应式为:
化合物4:
该化合物的理化性质如下:
1)、浅黄色固体,熔点89~90℃,产率为73%。
2)、该化合物的核磁共振图谱(1H NMR,400MHz)特征:
以氘代CDCl3为溶剂,TMS为内标物,其中各峰归属为:δ:8.07(d,J=8.4Hz,2H),7.30(d,J=8.0Hz,2H),6.82(d,J=8.4Hz,1H),6.72(d,J=2.4Hz,1H),6.65(dd,J=8.4Hz,2.4Hz,1H),6.00(s,2H),2.44(s,3H)。
3)、该化合物的HRMS(ESI):Calcd for C15H13O4([M+H]+),257.0808;found,257.0809。
4)、反应式为:
化合物5:
该化合物的理化性质如下:
1)、浅黄色固体,熔点145~146℃,产率为66%。
2)、该化合物的核磁共振图谱(1H NMR,400MHz)特征:
以氘代CDCl3为溶剂,TMS为内标物,其中各峰归属为:δ:8.11-8.14(m,2H),6.95-6.99(m,2H),6.82(d,J=8.4Hz,1H),6.72(d,J=2.4Hz,1H),6.50(dd,J=8.4Hz,2.4Hz,1H),5.99(s,2H),3.89(s,3H)。
3)、该化合物的HRMS(ESI):Calcd for C15H13O5([M+H]+),273.0757;found,273.0759。
4)、反应式为:
化合物6:
该化合物的理化性质如下:
1)、白色固体,熔点108~110℃,产率为75%。
2)、该化合物的核磁共振图谱(1H NMR,400MHz)特征:
以氘代CDCl3为溶剂,TMS为内标物,其中各峰归属为:δ:8.08-8.12(m,2H),7.50-7.53(m,2H),6.82(d,J=8.4Hz,1H),6.72(d,J=2.4Hz,1H),6.65(dd,J=8.4Hz,2.4Hz,1H),6.00(s,2H),1.36(s,9H)。
3)、该化合物的HRMS(ESI):Calcd for C18H19O4([M+H]+),299.1278;found,299.1281。
4)、反应式为:
化合物7:
该化合物的理化性质如下:
1)、白固体,熔点61~62℃,产率为83%。
2)、该化合物的核磁共振图谱(1H NMR,400MHz)特征:
以氘代CDCl3为溶剂,TMS为内标物,其中各峰归属为:δ:7.98-8.01(m,1H),7.46-7.53(m,2H),7.36-7.40(m,1H),6.83(d,J=8.4Hz,1H),6.77(d,J=2.4Hz,1H),6.70(dd,J=8.4Hz,2.4Hz,1H),6.00(s,2H)。
3)、该化合物的HRMS(ESI):Calcd for C14H10ClO4([M+H]+),277.0262;found,277.0263。
4)、反应式为:
化合物8:
该化合物的理化性质如下:
1)、白色固体,熔点89~90℃,产率为79%。
2)、该化合物的核磁共振图谱(1H NMR,400MHz)特征:
以氘代CDCl3为溶剂,TMS为内标物,其中各峰归属为:δ:8.09-8.12(m,2H),7.46-7.49(m,2H),6.83(d,J=8.4Hz,1H),6.72(d,J=2.4Hz,1H),6.65(dd,J=8.4Hz,2.4Hz,1H),6.00(s,2H)。
3)、该化合物的HRMS(ESI):Calcd for C14H10ClO4([M+H]+),277.0262;found,277.0265。
4)、反应式为:
化合物9:
该化合物的理化性质如下:
1)、白固体,熔点64~65℃,产率为90%。
2)、该化合物的核磁共振图谱(1H NMR,400MHz)特征:
以氘代CDCl3为溶剂,TMS为内标物,其中各峰归属为:δ:7.95-7.98(m,1H),7.71-7.73(m,1H),7.37-7.45(m,2H),6.83(d,J=8.4Hz,1H),6.78(d,J=2.4Hz,1H),6.71(dd,J=8.4Hz,2.4Hz,1H),6.01(s,2H)。
3)、该化合物的HRMS(ESI):Calcd for C14H10BrO4([M+H]+),320.9757;found,320.9759。
4)、反应式为:
化合物10:
该化合物的理化性质如下:
1)、白色固体,熔点108~109℃,产率为64%。
2)、该化合物的核磁共振图谱(1H NMR,400MHz)特征:
以氘代CDCl3为溶剂,TMS为内标物,其中各峰归属为:δ:8.01-8.05(m,2H),7.63-7.66(m,2H),6.82(d,J=8.4Hz,1H),6.72(d,J=2.4Hz,1H),6.65(dd,J=8.4Hz,2.4Hz,1H),6.00(s,2H)。
3)、该化合物的HRMS(ESI):Calcd for C14H10BrO4([M+H]+),320.9757;found,320.9758。
4)、反应式为:
化合物11:
该化合物的理化性质如下:
1)、黄色固体,熔点149~150℃,产率为71%。
2)、该化合物的核磁共振图谱(1H NMR,400MHz)特征:
以氘代CDCl3为溶剂,TMS为内标物,其中各峰归属为:δ:8.36(s,4H),6.85(d,J=8.4Hz,1H),6.74(d,J=2.4Hz,1H),6.68(dd,J=8.4Hz,2.4Hz,1H),6.03(s,2H)。
3)、该化合物的HRMS(ESI):Calcd for C14H10NO6([M+H]+),288.0503;found,288.0505。
4)、反应式为:
化合物12:
该化合物的理化性质如下:
1)、黄色固体,熔点83~85℃,产率为71%。
2)、该化合物的核磁共振图谱(1H NMR,400MHz)特征:
以氘代CDCl3为溶剂,TMS为内标物,其中各峰归属为:δ:9.37(dd,J=2.4Hz,1.2Hz,1H),8.85(dd,J=4.8Hz,1.6Hz,1H),8.41-8.44(m,1H),7.44-7.47(m,1H),6.83(d,J=8.4Hz,1H),6.74(d,J=2.4Hz,1H),6.68(dd,J=8.4Hz,2.4Hz,1H),6.01(s,2H)。
3)、该化合物的HRMS(ESI):Calcd for C13H10NO4([M+H]+),244.0604;found,244.0601。
4)、反应式为:
化合物13:
该化合物的理化性质如下:
1)、白色固体,熔点143~145℃,产率为81%。
2)、该化合物的核磁共振图谱(1H NMR,400MHz)特征:
以氘代CDCl3为溶剂,TMS为内标物,其中各峰归属为:δ:8.85(dd,J=4.4Hz,1.6Hz,2H),7.98(dd,J=4.4Hz,1.6Hz,2H),6.83(d,J=8.4Hz,1H),6.74(d,J=2.4Hz,1H),6.67(dd,J=8.4Hz,2.4Hz,1H),6.01(s,2H)。
3)、该化合物的HRMS(ESI):Calcd for C13H10NO4([M+H]+),244.0604;found,244.0603。
4)、反应式为:
化合物14:
该化合物的理化性质如下:
1)、浅黄色固体,熔点93~95℃,产率为63%。
2)、该化合物的核磁共振图谱(1H NMR,400MHz)特征:
以氘代CDCl3为溶剂,TMS为内标物,其中各峰归属为:δ:8.06-8.09(m,1H),7.87-7.90(m,1H),7.81-7.84(m,1H),7.44-7.59(m,4H),6.71(d,J=8.4Hz,1H),6.51(d,J=2.4Hz,1H),6.45(dd,J=8.4Hz,2.4Hz,1H),5.93(s,2H),4.26(s,2H)。
3)、该化合物的HRMS(ESI):Calcd for C19H15O4([M+H]+),307.0965;found,307.0966。
4)、反应式为:
实施例2:抑制植物病原真菌/卵菌活性实验
1、供试植物病原菌
(1)植物病原真菌共5种,分别是小麦赤霉病菌(Fusariumgraminearum)、水稻稻瘟病菌(Pyricularia oryzae)、西瓜枯萎病菌(Fusariumoxysporum)、马铃薯干腐病菌(Fusariumsulphureum)和苹果腐烂病菌(Valsamali),均由河南科技大学园艺与植物保护学院植物保护系实验室提供。
(2)植物病原卵菌共1种,即辣椒疫霉病菌(Phytophthoracapsici),由河南科技大学园艺与植物保护学院植物保护系实验室提供。
2、供试样品及试剂
已商品化杀菌剂恶霉灵(Hymexazol)为阳性对照,实施例1制备的1-酰氧基芝麻酚类衍生物1~14,丙酮(分析纯)。
3、生测方法
采用菌丝生长速率法。
培养基:PDA培养基(其配比为:去皮马铃薯200g、葡萄糖20g、琼脂20g、蒸馏水定容至1000mL)和V8培养基(其配比为:V-8蔬菜汁160mL、琼脂15g、蒸馏水1 500mL)。
采用菌丝生长速率法分别测定了芝麻酚、1-酰氧基芝麻酚类衍生物1~14对6种常见植物病原真菌/卵菌的室内毒力,以商品化杀菌剂恶霉灵作为阳性对照。将化合物1~14和恶霉灵用丙酮溶解,待灭菌后的培养基冷却至50-55℃时分别与化合物1~14和恶霉灵混合,充分混匀后制成含有100mg/L带药培养基,以不加药剂的为空白对照(CK),每个处理设三个重复。待培养基充分冷却后,接种生长活力一致,直径7mm的供试病原真菌/卵菌菌片,于28±1℃恒温培养,待不同菌CK组菌落长到超过7.5cm时调查。调查时,用十字交叉法测量菌落直径,并用下述公式计算出各个样品对所测病原菌的生长抑制率。
4、杀菌活性测定结果见表2
表2:1-酰氧基芝麻酚类衍生物1~14对供试菌株的抑菌效果
5、结论
结果表明,本发明公开的1-酰氧基芝麻酚类衍生物1~14对所测6种植物病原真菌/卵菌均表现出较好的抑菌活性;特别是化合物1、3、4和13,其对所测6种供试菌株的抑菌活性均高于已商品化的抗菌剂恶霉灵(Hymexazol);另外,所有化合物1~14对马铃薯干腐病菌(真菌)和辣椒疫霉病菌(卵菌)两种植物病原菌的抑菌活性均超过已商品化的广谱抗菌剂恶霉灵。鉴于此,本发明公开的一种1-酰氧基芝麻酚类衍生物抑制植物病原真菌/卵菌活性显著,今后有望用于制备新型高效植物源杀菌剂。
Claims (1)
1.结构通式如式(Ⅰ)所示的1-酰氧基芝麻酚类衍生物在制备植物病原真菌或/和卵菌抗菌剂中的应用;
所述的植物病原真菌为小麦赤霉病菌、水稻稻瘟病菌、西瓜枯萎病菌、马铃薯干腐病菌和苹果腐烂病菌中的至少一种;所述的植物病原卵菌为辣椒疫霉病菌;
式(Ⅰ)中:取代基R选自Ph、(o-Me)Ph、(m-Me)Ph、(p-Me)Ph、(p-OMe)Ph、(p-tert-butyl)Ph、(o-Cl)Ph、(p-Cl)Ph、(o-Br)Ph、(p-Br)Ph、(p-NO2)Ph、3-Pyridyl、4-Pyridyl、1-Naphthylmethylene。
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