CN116063226A - Ether compound containing monoterpene phenol structure - Google Patents

Ether compound containing monoterpene phenol structure Download PDF

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CN116063226A
CN116063226A CN202310245713.3A CN202310245713A CN116063226A CN 116063226 A CN116063226 A CN 116063226A CN 202310245713 A CN202310245713 A CN 202310245713A CN 116063226 A CN116063226 A CN 116063226A
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compound
monoterpene
antibacterial activity
ether
ether compound
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CN116063226B (en
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王凯博
李文希
龙丽雪
李康
陶丽红
叶敏
陈洪云
罗梓文
李晓霞
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Tea Research Institute Yunnan Academy of Agricultural Sciences
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D213/00Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/24Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with substituted hydrocarbon radicals attached to ring carbon atoms
    • C07D213/28Radicals substituted by singly-bound oxygen or sulphur atoms
    • C07D213/30Oxygen atoms
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION 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
    • A01N43/00Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/34Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
    • A01N43/40Biocides, 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
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01PBIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
    • A01P3/00Fungicides
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/52Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

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  • Organic Chemistry (AREA)
  • Environmental Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Plant Pathology (AREA)
  • Zoology (AREA)
  • Engineering & Computer Science (AREA)
  • Pest Control & Pesticides (AREA)
  • General Health & Medical Sciences (AREA)
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  • Agronomy & Crop Science (AREA)
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  • General Chemical & Material Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

An ether compound containing a monoterpene phenol structure relates to the technical field of agriculture, in particular to a bactericidal compound. The compound is formed by splicing a nicotinic acid structure and monoterpene phenol through ether bonds. The compound disclosed by the invention has excellent antibacterial activity on three plant pathogenic fungi of alternaria solani, camellia anthracis and rhizoctonia solani, and the antibacterial activity on the camellia anthracis far higher than that of a commercial bactericide boscalid. The overall antibacterial activity is superior to that of a picolyl-phenyl ether compound without a monoterpene structure, and the monoterpene phenol pyridylmethyl ether compound with other aromatic rings has potential application prospect in the field of plant pathogenic fungi resistance.

Description

Ether compound containing monoterpene phenol structure
Technical Field
The invention relates to the technical field of agriculture, in particular to a bactericidal compound.
Background
The occurrence and prevalence of plant diseases severely restrict the development of agricultural production and threaten the quality safety of agricultural products. Pesticides are commonly used for plant disease control, and are dominant in plant protection. The plant essential oil has the advantages of simplicity, easiness in obtaining, safety to non-target organisms, good environmental compatibility and the like, and is widely used for preventing and controlling agricultural diseases. However, the components of the plant essential oil are complex and various, the plant essential oil is often different and diversified due to factors such as species, varieties, geographical distribution, growing seasons and the like, and the plant essential oil is easy to volatilize and has poor stability, so that the plant essential oil is difficult to directly use as pesticide.
Natural monoterpene phenols such as carvacrol (2-methyl-5-isopropyl phenol) and thymol (thymol, 2-isopropyl-5-methyl phenol) widely exist in essential oils of various plants such as origanum vulgare, thyme and savory, have good growth inhibition effect on various agricultural diseases, are known from the Chinese pesticide information network, and carvacrol water aqua is registered in China for preventing and treating various plant fungal diseases, and has good growth inhibition effect on Alternaria solani @Alternaria solani) Camellia anthracisColletotrichum camelliae) Rhizoctonia solani (wall.) kuntzeRhizoctonia solani) All have certain inhibition effect and have potential of further development and application as lead compounds. However, compared with commercial bactericides, the antibacterial activity of the monoterpene phenol compound has a gap, and the monoterpene phenol compound contains phenolic hydroxyl groups, is easy to oxidize, is difficult to directly use as pesticide, and needs to further improve the activity and stability through structural modification. The modification of the natural product structure is an effective means for creating from lead compounds to active ingredients of bactericides, the pyridine structure is a common active functional group in bactericides, and the ether structure is neutral, alkaline and weak acidStable under the condition, is a common group for protecting phenolic hydroxyl. In the prior art, no report of designing a novel bactericide molecule by combining a nicotinic acid structure and monoterpene phenol through ether bonds has been found.
Disclosure of Invention
The invention aims to provide a novel ether compound containing a monoterpene phenol structure, which can be applied to the prevention and treatment of plant fungal diseases.
An ether compound containing a monoterpene phenol structure, which has the structural formula:
Figure SMS_1
wherein R is 1 Is CH (CH) 3 ) 2 , R 2 Is CH 3 Or R 1 Is CH 3 , R 2 Is CH (CH) 3 ) 2
The compound disclosed by the invention has excellent antibacterial activity on three plant pathogenic fungi of alternaria solani, camellia anthracis and rhizoctonia solani, and the antibacterial activity on the camellia anthracis far higher than that of a commercial bactericide boscalid. The overall antibacterial activity is superior to that of a picolyl-phenyl ether compound without a monoterpene structure, and the monoterpene phenol pyridylmethyl ether compound with other aromatic rings has potential application prospect in the field of plant pathogenic fungi resistance.
Drawings
FIG. 1 shows the molecular structural formula of the compound of the invention.
FIG. 2 is a synthetic route for compound 1 of the present invention.
FIG. 3 is a synthetic route for compound 2 of the present invention.
The specific embodiment is as follows:
example 1: the structural formula of the ether compound containing the monoterpene phenol structure is a compound 1 or a compound 2.
Compound 1:
Figure SMS_2
compound 2:
Figure SMS_3
the synthetic routes of compound 1 and compound 2 are shown in fig. 2 and 3.
The specific synthesis steps of the compound 1 are as follows:
step 1, 1 mmol carvacrol was dissolved in 5 mL DMF and 3 mmol potassium carbonate was added.
Step 2, 1.5 mmol of 3-chloromethylpyridine was dissolved in 1mL of DMF and slowly added dropwise to carvacrol solution at room temperature.
Step 3, TLC tracks the reaction progress, after the reaction is completed, the organic phases are extracted and combined, and the organic phases are dried and concentrated for column chromatography to obtain the target compound 1, wherein the yield is 74.41%.
Characterization data for compound 1 were: 1 H NMR (500 MHz, Chloroform-d) δ 8.72 (s, 1H), 8.59 (d,J= 4.9 Hz, 1H), 7.80 (d,J= 7.8 Hz, 1H), 7.33 (dd,J= 7.9, 4.8 Hz, 1H), 7.09 (d,J= 7.4 Hz, 1H), 6.81 – 6.76 (m, 2H), 5.10 (s, 2H), 2.92 – 2.83 (m, 1H), 2.24 (d,J= 0.9 Hz, 3H), 1.25 (d,J= 6.9 Hz, 6H). 13 C NMR (126 MHz, Chloroform-d) δ 156.44, 149.25, 148.83, 148.04, 135.05, 133.11, 130.71, 124.39, 123.50, 118.81, 109.85,67.48, 34.13, 24.14, 15.94. MS calcd for C 16 H 19 NO m/z 241.15, found 241.20, data indicate that this compound 1 is structurally correct.
The specific synthesis steps of the compound 2 are as follows:
step 1, 1 mmol thymol was dissolved in 5 mL DMF and 3 mmol potassium carbonate was added.
Step 2, 1.5 mmol of 3-chloromethylpyridine was dissolved in 1mL of DMF and slowly added dropwise to thymol solution at room temperature.
Step 3, TLC tracks the reaction progress, after the reaction is completed, the organic phases are extracted and combined, and the target compound 2 is obtained through dry concentration column chromatography, and the yield is 67.33%.
Characterization data for compound 2 were: 1 H NMR (500 MHz, Chloroform-d) δ 8.72 (s, 1H), 8.59 (d,J= 4.9 Hz, 1H), 7.79 (d,J= 9.9 Hz, 1H), 7.34 (d,J= 4.8 Hz, 1H), 7.14 (d,J= 7.7 Hz, 1H), 6.80 (d,J= 7.7 Hz, 1H), 6.75 (s, 1H), 5.08 (s, 2H), 3.38 – 3.29 (m, 1H), 2.33 (s, 3H), 1.21 (d,J= 6.9 Hz, 6H). 13 C NMR (126 MHz, Chloroform-d) δ 155.42, 149.21, 148.74, 136.46, 134.98, 134.37, 133.13, 126.15, 123.54, 121.89, 112.56, 67.58, 26.61, 22.81, 21.36. MS calcdfor C 16 H 19 NO m/z 241.15, found 241.20, data indicate that this compound 2 is structurally correct.
The antibacterial activity of the compound 1 and the compound 2 on plant pathogenic bacteria Alternaria solani, camellia anthracis and Rhizoctonia solani is measured by adopting a hypha growth rate method.
The hypha growth rate method specifically comprises the following steps: dissolving a compound to be tested with a certain amount of dimethyl sulfoxide (DMSO), preparing mother liquor with the concentration of 5000 mug/mL, adding the mother liquor and the culture medium in the volume ratio of 1:100 when the PDA culture medium is cooled to 45 ℃, fully and uniformly mixing, pouring the mixture into culture dishes with the diameter of 9 cm, and preparing a plate treatment group with the final concentration of 50 mug/mL by 15 mL per dish; the blank control group was added with DMSO in an amount equivalent to that of the treatment group; boscalid at the same concentration was used as a positive control group and a picolyl-phenyl ether homolog and a monoterpenyl-methyl aromatic ring ether homolog were used as comparative examples. After the tested pathogenic bacteria are activated for two generations, a puncher with the inner diameter of 5 mm is used for punching bacterial cakes at the edge of a bacterial colony, the bacterial cakes are respectively inoculated on a PDA flat plate with medicines and a blank control, the bacterial colonies are cultivated in the dark for a certain time at the temperature of 26+/-0.5 ℃, and when the bacterial colony of the blank control group grows to the edge of the flat plate, the diameter of the bacterial colony is measured by a crisscross method.
The method is repeated three times, and the average inhibition rate and standard deviation of different compounds on the growth of hyphae of several plant pathogenic bacteria are calculated according to the three measurement results. The results are shown in table 1 below:
TABLE 1
Figure SMS_4
Figure SMS_5
As can be seen from table 1:
the antibacterial activity of the compound 1 and the compound 2 against Alternaria solani is equivalent to that of the commercial bactericide boscalid, and is higher than that of the parent compounds carvacrol and thymol. Compared with other picolyl-phenyl ether compounds without monoterpene structure, the antibacterial activity of the compounds 1 and 2 is higher than that of picolyl-phenyl ether homologs 1-4. Of the monoterpene-methyl aromatic ring ether homologs, only ether homolog 11 containing thiazole groups has the same antibacterial activity as that of compound 1 and compound 2, and other compounds have lower antibacterial activity than that of compound 1 and compound 2.
For camellia anthracnose, the antibacterial activity of the compound 1 and the compound 2 is higher than that of carvacrol, thymol which are parent compounds and the commercial bactericide boscalid. The bacteriostatic activity of compounds 1 and 2 is higher than that of picolyl-phenyl ether homologues 1-4, compared with other picolyl-phenyl ether homologues without monoterpene structure. The antibacterial activity of the compound 1 and the compound 2 is higher than that of other monoterpene-methyl aromatic ring ether homologues.
The antibacterial activity of the rhizoctonia solani, the compound 1 and the compound 2 is slightly higher than that of carvacrol, thymol which are parent compounds and the commercial bactericide boscalid. The bacteriostatic activity of compounds 1 and 2 is higher than that of picolyl-phenyl ether homologues 1-4, compared with other picolyl-phenyl ether homologues without monoterpene structure. Of the monoterpene-methyl aromatic ring ether homologs, only ether compound 12 containing thiazole groups has the antibacterial activity equivalent to that of compound 1 and compound 2, and other compounds are lower than that of compound 1 and compound 2.

Claims (1)

1. An ether compound containing a monoterpene phenol structure, which has the structural formula:
Figure QLYQS_1
wherein R is 1 Is CH (CH) 3 ) 2 , R 2 Is CH 3 Or R 1 Is CH 3 , R 2 Is CH (CH) 3 ) 2
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10122097A1 (en) * 2000-07-24 2002-02-07 Bayer Ag Pyrazolylbiphenylcarboxamide
AU2010268837A1 (en) * 2009-07-08 2012-02-02 Bayer Intellectual Property Gmbh Phenyl(oxy/thio)alkanol derivatives
US20150223452A1 (en) * 2012-08-03 2015-08-13 Bayer Cropscience Ag Composition comprising a pesticidal terpene mixture and a fungicide
CN109810062A (en) * 2019-01-24 2019-05-28 云南农业大学 A kind of phenylimidazole derivatives and its synthetic method and the application in pesticide
CN109942427A (en) * 2019-04-17 2019-06-28 云南农业大学 A kind of monoterpene phenol derivatives and its synthetic method and the application in pesticide
CN112321513A (en) * 2020-11-06 2021-02-05 中国药科大学 Heterocyclic compound and preparation method and application thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10122097A1 (en) * 2000-07-24 2002-02-07 Bayer Ag Pyrazolylbiphenylcarboxamide
AU2010268837A1 (en) * 2009-07-08 2012-02-02 Bayer Intellectual Property Gmbh Phenyl(oxy/thio)alkanol derivatives
US20150223452A1 (en) * 2012-08-03 2015-08-13 Bayer Cropscience Ag Composition comprising a pesticidal terpene mixture and a fungicide
CN109810062A (en) * 2019-01-24 2019-05-28 云南农业大学 A kind of phenylimidazole derivatives and its synthetic method and the application in pesticide
CN109942427A (en) * 2019-04-17 2019-06-28 云南农业大学 A kind of monoterpene phenol derivatives and its synthetic method and the application in pesticide
CN112321513A (en) * 2020-11-06 2021-02-05 中国药科大学 Heterocyclic compound and preparation method and application thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ACS: "RN:1495987-59-1", 《STN REGISTRY数据库》 *
王凯博;吴文伟;王群;尹梅;张兴富;杨从党;付兆聪;李琼仙;浦军;黄吉美;何成兴;: "单萜酚类化合物与苯醚甲环唑和噻呋酰胺混配对立枯丝核菌的抑菌活性研究", 中国农学通报, no. 08 *

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