Cyclodextrin Encapsulation of Bicycloalkanes for Higher Inclusion Yield

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Solution Overview

Problem

Existing methods for producing inclusion bodies of bicycloalkane compounds, such as BCP, with cyclodextrin are inefficient, particularly at larger scales, leading to reduced production efficiency.

Innovation Solution

A production method involving mixing bicycloalkane compounds with cyclodextrin in a mixed solvent of water and an organic solvent, while shielding light of 400 nm or less, to enhance the yield of the inclusion body.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If bicycloalkane compound and cyclodextrin are mixed in water only, then the process is simple, but the inclusion efficiency and production yield are insufficient

Engineering Contradiction:
Improveprocess simplicityVSAvoidinclusion efficiency
Core Design Contradiction:
Ease of manufactureVSProductivity

Solution Approach 1:

The patent changes the solvent parameter from pure water to a mixed solvent system (water-organic solvent mixture), which significantly improves the inclusion efficiency and yield of bicycloalkane compounds while maintaining process simplicity. The organic solvent component enhances the solubility and interaction between the bicycloalkane compound and cyclodextrin.

Inventive Principle:
Principle #35Parameter changes

2Quantity of substance

If the amount of preparation is increased, then the production scale is expanded, but the production efficiency is significantly reduced

Engineering Contradiction:
Improvepreparation amountVSAvoidproduction efficiency
Core Design Contradiction:
Quantity of substanceVSProductivity

Solution Approach 1:

The patent applies parameter changes by introducing a mixed solvent system that maintains high inclusion efficiency even at larger preparation amounts. This resolves the contradiction by enabling scale-up without the typical efficiency loss associated with increased quantities.

Inventive Principle:
Principle #35Parameter changes

3Productivity

If mixed solvent system is used, then the yield of inclusion compound is increased, but the process complexity increases

Engineering Contradiction:
Improveinclusion yieldVSAvoidprocess complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent uses parameter changes (solvent composition) to achieve high inclusion yield. While this introduces some complexity, the patent minimizes it by using common organic solvents and straightforward mixing procedures, making the complexity acceptable given the significant yield improvement.

Inventive Principle:
Principle #35Parameter changes

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 significantly increases the yield of inclusion bodies of bicycloalkane compounds, achieving high purity and efficiency even at increased scales.

Implementation Method 1

mixing a bicycloalkane compound with a cyclodextrin compound in a mixed solvent of water and an organic solvent to obtain an inclusion body of the bicycloalkane compound

Methodology Applied
Scientific EffectInclusion complex formation: Absorption (physical)

Implementation Method 2

mixing a bicycloalkane compound with a cyclodextrin compound in a mixed solvent of water and an organic solvent

Methodology Applied
Scientific EffectSolvation: Solvation

Data Source

PatentEP4403542B1Production method for encapsulation of bicycloalkane compound
Publication Date: 2026.02.11 FUJIFILM CORP
  • EP4403542B1 patent drawing
  • EP4403542B1 patent drawing
  • EP4403542B1 patent drawing

AI summary

Provided is a production method of an inclusion body of a bicycloalkane compound, the production method including mixing a bicycloalkane compound with a cyclodextrin compound in a mixed solvent of water and an organic solvent.