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Preparation and application of plant growth regulator

A plant growth regulator, the technology of growth regulator, applied in the directions of plant growth regulator, plant growth regulator, botanical equipment and method, etc. The use method is simple, the fertilizer efficiency is improved, and the raw materials are cheap and easy to obtain.

Inactive Publication Date: 2019-11-22
郑州信联生化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its extremely low content in natural plants, extraction and separation, especially purification, consumes a large amount of raw materials and reagents, the cost is high, and the output is limited.

Method used

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  • Preparation and application of plant growth regulator
  • Preparation and application of plant growth regulator
  • Preparation and application of plant growth regulator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: Preparation of 14-hydroxybrassinosterol

[0024] Reducing agent: lithium amide, lithium aluminum tetrahydrogen, sodium borohydride / cuprous iodide, etc.;

[0025] Reaction temperature: -78°C-10°C;

[0026] Solvent: THF;

[0027] Synthesis steps: Add dry THF into a dry three-neck flask, slowly cool down to 0°C under stirring, slowly add 2.5g of lithium aluminum hydride solid powder at low temperature, and slowly add 10g of ecdysone in 30ml of THF solution Add it dropwise into the reaction system, and continue to react at 0°C for 2 hours after the addition. After the reaction, add 20ml of water to quench the reaction, extract the reaction system with ethyl acetate, and crystallize the organic phase with ethanol to obtain a white product. The rate is 85%.

Embodiment 2

[0028] Embodiment 2: Synthesis of 14-hydroxybrassinosterol

[0029]

[0030] Catalyst: Pd / C, Pt / C, Pd / (OH)2, Raney nickel and other metal catalysts;

[0031] Reaction temperature: 24-80°C;

[0032] Reaction pressure, 0-3Mpa;

[0033] Solvents: methanol, ethanol.

[0034] Implementation steps:

[0035] Weigh 10.0 g of 20-hydroxyecdysterone, 0.1 g of 10% wet Pd / C, 20 ml of 25% aqueous sodium nitrite solution, use 40 ml of ethanol as the reaction solvent, and react for 2 h under normal hydrogen pressure. After the reaction was complete, the Pd / C was filtered off, the filtrate was evaporated to dryness, the residual solid was dissolved with ethanol, and the ethanol solution was concentrated and crystallized to obtain 8.9 g of the product, with a yield of 90%.

Embodiment 3

[0036] Example 3: Determination of the Properties and Structure of 14-Hydroxybrassinosterol

[0037] 3.1 Basic Information

[0038] Chinese name: 14-hydroxybrassinosterol;

[0039] English name:

[0040] (2S,3R,5S,10R,13R,14R)-2,3,4-trihydroxy-10,13dimethyl-17-((2R,3R)-2,3,6,-trihydroxhylheptan-2-yl)-tettadecahydro -9H-cyclopenta[a]phenantren-6(14H)-one

[0041] Molecular formula: C 27 h 46 o 7

[0042] Molecular weight: 482.65

[0043] Chemical structure:

[0044]

[0045] 3.2 Determination of physical properties

[0046] Appearance: white powder;

[0047] Solubility: soluble in methanol, ethanol, chloroform and other organic solvents;

[0048] Acidity and alkalinity: neutral;

[0049] Stability: stable under acidic and alkaline conditions.

[0050] 3.3 Spectrometry

[0051]Adopt instrumental analysis method to test sample (embodiment 2), see attached figure 1 , LC-MS spectrogram attached figure 2 , the qualitative mass spectrum is attached image 3 with...

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Abstract

The invention relates to the preparation and application of a plant growth regulator. The plant growth regulator is 14-hydroxybrassinosteroid, and is characterized in that the raw materials are easy to obtain, the price is low, the preparation method is simple, convenient and feasible, and the use method is simple. According to the preparation and application of the 14-hydroxybrassinosteroid, the14-hydroxybrassinosteroid has the effects of promoting the plant growth, promoting the fruit and vegetable setting, accelerating the germination, improving the quality and the stress resistance, can be compounded with the cytokinin, the gibberellic acid, a bactericide, the plant inhibition regulator, the herbicides, the abscisic acid and a biochemical regulator, remarkably improves the pesticide effect and the stability, increases the utilization rate of a preparation, and is suitable for the industrial production.

Description

technical field [0001] The invention relates to the fields of chemical industry and agriculture, in particular to the preparation and application of a plant growth regulator 14-hydroxybrassinosterol. Background technique [0002] Brassinolides are a class of broad-spectrum, highly active plant growth regulators. Its activity is mainly manifested in promoting plant growth, increasing seed setting rate, increasing yield, improving quality, and stress resistance. The active ingredients of brassinolide and other brassinolides with similar structures and functions are known as the sixth class of plant hormones after auxin, gibberellin, cytokinin, abscisic acid and ethephon. Due to the high physiological activity of these substances, they have a unique effect on regulating growth and development, and a very small dose can show a good regulating effect. As the sixth type of plant growth regulator, compared with the first five types of plant growth regulators, it has obvious advan...

Claims

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Application Information

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IPC IPC(8): C07J9/00A01N45/00A01N43/12A01N33/12A01P21/00
CPCA01N33/12A01N43/12A01N45/00C07J9/00
Inventor 刘福琳吴鸣建杨俊亮王雪玲胡殿丽
Owner 郑州信联生化科技有限公司
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