Strigolactam Derivatives for Parasitic Weed Control
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Solution Overview
Problem
Current strigolactone derivatives are not effective in regulating plant growth and seed germination, particularly in controlling parasitic weeds like Orobanche species, and there is a need for more efficient phytohormones that can promote seed germination and inhibit parasitic weed growth.
Innovation Solution
Development of novel strigolactam derivatives with specific chemical structures that mimic the properties of strigolactones, including compounds of formula (I) and their use in plant growth regulator compositions, which can be formulated with adjuvants to enhance their efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing strigolactone derivatives are used to control parasitic weeds, then seed germination promotion is achieved, but plant growth regulation effectiveness is insufficient
Solution Approach 1:
The patent modifies the chemical structure of strigolactone derivatives by changing molecular parameters - specifically introducing strigolactam core structure with modified substituents at positions R1-R10, transforming the lactone ring into a lactam structure to enhance biological activity and effectiveness
Solution Approach 2:
The invention creates composite molecular structures combining the strigolactam core with various functional groups and substituents (carboxylic acid, ester, amide, urea, carbamate, cyanate, isocyanate, hydroxycarbonyl, carbonyl, carboxylic acid ester, carboxylic acid amide, urea, carbamate, cyanate, isocyanate, hydroxycarbonyl, carbonyl, carboxylic acid ester, carboxylic acid amide) to achieve both seed germination promotion and plant growth regulation
2Measurement precision
If strigolactone analogues are tested for Orobanche seed germination, then identification of effective compounds is achieved, but the compounds lack sufficient plant growth regulation properties
Solution Approach 1:
The patent systematically modifies molecular parameters of strigolactone analogues by changing the core structure from strigolactone to strigolactam and adjusting substituent groups to achieve both germination promotion and growth regulation activities
Solution Approach 2:
The strigolactam derivatives are designed to perform multiple functions simultaneously - promoting seed germination of parasitic weeds while also regulating plant growth of crops, making them universal effective compounds that address both testing requirements and practical application needs
Data Source
AI summary
The present invention relates to novel strigolactam derivatives of formula (I) to processes and intermediates for preparing them, to plant growth regulator compositions comprising them and to methods of using them for controlling the growth of plants and/or promoting the germination of seeds.