Novel Compound Synthesis Using Asymmetric Alkylation for Epimerization Control
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Solution Overview
Problem
The existing synthesis method for M-COPA results in low yields due to epimerization at the α position of the aldehyde group, and there is a need for new analogs with improved efficiency and high yields.
Innovation Solution
A novel synthesis method involving specific steps such as asymmetric alkylation, reduction, oxidation, Mukaiyama Aldol reaction, hydroxy group protection, and Horner-Wadsworth-Emmons reaction to produce a compound represented by formula (1), which includes functional groups like -C(O)OR d< or -C(O)NR e< R f< , with R d< and R f< being pyridin-3-ylmethyl, pyridin-4-ylmethyl, oxazol-4-ylmethyl, oxazol-5-ylmethyl, thiazol-2-ylmethyl, or thiazol-5-ylmethyl groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the existing synthesis method is used to produce M-COPA, then the compound can be obtained, but the yield is low due to epimerization at the α position of the aldehyde group
Solution Approach 1:
The patent changes the chemical parameters of the synthesis method by using asymmetric alkylation with a chiral auxiliary (Evans auxiliary) instead of the conventional method. This parameter change in the reaction conditions prevents epimerization at the α position of the aldehyde group, thereby improving both yield and stereochemical control to produce high-yield M-COPA with correct stereochemistry.
2Adaptability or versatility
If new analogs are developed from M-COPA, then cancer treatment options are improved, but the synthesis complexity increases
Solution Approach 1:
The patent performs preliminary action by establishing a robust asymmetric alkylation methodology with chiral auxiliary control before developing analogs. This preliminary synthesis framework provides a reliable starting point that simplifies subsequent analog development, as the stereochemical control is already built into the method, reducing the complexity of producing new derivatives.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method enables the production of a novel compound with high efficiency, suitable for cancer treatment, and a pharmaceutical composition containing it as an active ingredient, effective in inhibiting receptor tyrosine kinases and treating various cancers.
Implementation Method 1
asymmetric alkylation
Implementation Method 2
reduction
Implementation Method 3
oxidation
Implementation Method 4
Mukaiyama Aldol reaction
Implementation Method 5
hydroxy group protection
Implementation Method 6
Horner-Wadsworth-Emmons reaction
Data Source
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AI summary
Provided is a compound, represented by formula (1) below, useful for treating cancer or the like. In the formula, R1 and R3-R8 each independently indicate a hydrogen atom or an alkyl group. R2 indicates a hydrogen atom or a group represented by -ORa or the like. R9 indicates a group represented by - C(O)NReRf or the like. Ra, Re, and Rf each independently indicate a hydrogen atom, an arylalkyl group that may have a substituent, a heteroarylalkyl group, or the like. In addition, provided are: a production method that enables the compound to be produced with high efficiency; and a pharmaceutical composition containing the compound as an active ingredient.