Substituted 6-(alkylbenzylamino)purine Derivatives for Use as Cytokinin Receptor Antagonists and Preparations Containing These Derivatives

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This invention relates to a class of chemical compounds, substituted 6-(alkylbenzylamino)purine derivatives, which act as antagonists of cytokinin receptors in plants. By blocking the activity of cytokinins—plant hormones that regulate growth, development, and cell division—these compounds can effectively modulate plant development, such as promoting root growth and influencing seed germination, fruit size, and grain filling. The patent also covers compositions and agricultural formulations containing these compounds, intended for various practical plant growth regulation uses.

Use CasesContent extracted from patent full text and abstract with AI.

• Enhancing crop yield and quality by controlling plant hormone activity.
• Increasing root system size for improved nutrient and water uptake in crops.
• Reducing or regulating unwanted shoot growth or leaf senescence in agriculture and horticulture.
• Shortening seed germination periods for faster crop establishment.
• Increasing grain filling and fruit size in cereals, fruits, and legumes.
• Improving plant tissue culture efficiency by regulating cell proliferation and morphogenesis.
• Controlling specific aspects of plant development in greenhouse or ornamental plant production.
• Managing weed growth via hormonal antagonism.
• Preparation of cloning media for plant and mammalian embryonic cells.
• Combining with other growth regulators for synergistic growth control effects.

BenefitsContent extracted from patent full text and abstract with AI.

• Provides precise, non-toxic regulation of plant growth processes.
• Can be used to enhance desirable traits such as root mass or fruit/grain size.
• Contributes to more efficient and predictable tissue culture and propagation protocols.
• Formulations are versatile and adaptable to various application methods (seed dressing, foliar spray, etc.).
• Safe for use in agriculture; no cytotoxicity to animal/human cells has been observed.
• Enables better management of crop vigor and resource allocation (e.g., root vs. shoot growth).
• Can help improve resilience of crops to abiotic stress by enhancing root systems.
• May reduce need for genetic modification or more disruptive chemical growth regulators.

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Inventors & Applicants

Patent Abstract

The invention relates to 6-(alkylbenzylamino)purine derivatives of the general formula (I) for use as cytokinin receptor antagonists, wherein R1 is selected from the group comprising hydroxyl, amino, nitro, thio and alkyl group, and R2 denotes one to four alkyl groups. The invention also relates to preparations containing these derivatives.