Pentadienone compound containing quinazolinone aryloxy as well as preparation method and application thereof

A technology containing quinazolinone aryloxy group and oxazolinone aryloxy group, which is applied in the field of pentadienone derivatives and their preparation, and can solve the problem of unsynthesized pentadienone derivatives and anti-plant Viruses and other issues

Inactive Publication Date: 2014-05-28
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Known from background technology, quinazolinone compound and 1,4-pentadien-3-ketone compound all have the biological activity of respect such as anti-plant virus preferably, but about containing quinazolinone aryloxyl group Pentadienone derivatives have not yet been synthesized, and there are few domestic and foreign research reports on the anti-plant virus of this type of compound

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Example 1, (1E,4E)-3-((2-(3-oxo-5-phenyl-1,4-pentadien-1-yl)phenoxy)methyl)quinazoline- 4-(3 H )-Kone (A1) Synthesis

[0066] (1) quinazoline-4-(3 H )-ketone synthesis

[0067] Add 27.5 g (0.2 mol) of anthranilic acid and 36.1 g (0.8 mol) of formamide into a 250 mL three-necked flask equipped with a thermometer and a condenser tube to keep the temperature at 135-150 ° C. During this process, the system changes from light gray to The turbid liquid turned into a yellowish-brown clear liquid, and the reaction was tracked by TLC. The reaction was complete in about 5 hours. After cooling down to 100°C naturally, 100 mL of water was slowly added to the system to decompose excess formamide, and a light gray solid was precipitated at the same time. After natural cooling, it was transferred to a large beaker, and a large amount of water was added to still precipitate off-white solids. Suction filtration and drying gave 28.88 g of the product. Recrystallization with absolu...

Embodiment 2

[0078] Embodiment 2, the synthesis of compound (A2)

[0079] Steps (1)-(4) are the same as the steps (1)-(4) of Embodiment 1;

[0080] The difference between step (5) and step (5) of Example 1 is: add 0.78 g (5.56 mmol) p-chlorobenzaldehyde instead of 0.58 g (5.5 mmol) benzaldehyde, and react for 10 hours to obtain 1.23 g yellow solid, melting point ° C, yield Rate 86.5%;

[0081] The difference between step (6) and Example 1 step (6) is: add 0.37 g (1.31mmol) 1-(4-chlorophenyl)-5-(2-hydroxyphenyl)-1,4-pentadiene -3-one, instead of 0.33 g (1.31 mmol) 1-(2-hydroxyphenyl)-1,4-pentadien-3-one, reacted for 8 hours, recrystallized to obtain 0.23 g white solid, melting point 195-197°C , yield 39.6%.

Embodiment 3

[0082] Embodiment 3, the synthesis of compound (A3)

[0083] Step (1)-(4) is the same as embodiment 1 (1)-(4);

[0084] Step (5) is the same as embodiment 1 (5) method and condition. The difference is that 0.68 g (5.49 mmol) of 1-(2-fluorophenyl)-5-(2-hydroxyphenyl)-1,4-pentadien-3-one was added and reacted for 10 hours to obtain 1.10 g of a yellow solid, Yield 82.1%.

[0085] Step (6) is the same as embodiment 1 (6) method and condition. The difference is that 0.35 g (1.31 mmol) 1-(2-fluorophenyl)-5-(2-hydroxyphenyl)-1,4-pentadien-3-one was added, reacted for 5 hours, and recrystallized to obtain 0.25 g yellow Solid, melting point 142-144°C, yield 44.7%.

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PUM

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Abstract

The invention discloses a compound of resisting plant viruses: a pentadienone compound containing quinazolinone aryloxy and a preparation method and biological activity. The invention introduces a series of novel pentadienone derivatives containing quinazolinone aryloxy which are synthesized by six steps by taking substituted o-aminobenzoic acid, formamide, 35% formalin, 1, 4-dioxane, thionyl chloride, hydroxyl benzaldehyde, acetone, sodium hydroxide, hydrochloric acid, potassium carbonate, potassium iodide, substituted aromatic aldehyde, substituted heterocyclic aldehyde and the like as raw materials. The compound disclosed by the invention further has higher treating, protecting and passivating and inhibiting effects to cucumber mosaic virus (CMV), tobacco mosaic virus (TMV), southern rice black streaked dwarf virus (SRBSDV) and rice stripe virus (RSV), shows higher anti-plant virus activity, and can be used for preparing anti-plant virus pesticides.

Description

technical field [0001] The invention relates to pentadienone derivatives containing quinazolinone aryloxy group with anti-plant virus effect and a preparation method thereof. Background technique [0002] Quinazolinone compounds have good biological activity and environmental friendliness, and have become one of the hotspots of pesticide and pharmaceutical research at home and abroad in recent years. In terms of pesticides, quinazolinone compounds have biological activities such as antibacterial, antiviral, and acaricidal. Wherein fenazaquin (EL-436) is a kind of efficient novel acaricide with simple structure that Wright of U.S. Dow-Elanco Company (Dow AgroSciences) released in the late 1980s; commercialized fluquinazole ( Fluquinconazole) is a triazole fungicide with a quinazolinone structure developed by Schering, which has a good inhibitory effect on the biosynthesis of ergosterol. At the same time, it has protective, therapeutic and systemic activities, and is very eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D239/88C07D409/12C07D405/12C07D417/12C07D401/12A01P1/00
CPCA01N43/54A01N43/78C07D239/90C07D401/12C07D405/12C07D409/12C07D417/12
Inventor 胡德禹马娟宋宝安薛伟万治华金林红贺鸣陈卓李向阳
Owner GUIZHOU UNIV
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