Synthetic Rigidin Analogues for Anticancer Agents

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Solution Overview

Problem

Current anticancer agents derived from natural sources, such as rigidins, face challenges due to limited availability and inefficient synthesis, leading to underexplored biological properties and weak antiproliferative activities against cancer cell lines.

Innovation Solution

Development of novel four-component reaction methods to synthesize hypoxanthine-like rigidin analogues, which exhibit potent antiproliferative effects at low concentrations, overcoming the limitations of previous synthetic approaches.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If natural rigidins are used as anticancer agents, then biological activity is achieved, but availability is limited and synthesis is inefficient

Engineering Contradiction:
Improveantiproliferative activityVSAvoidsynthesis efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent modifies the chemical structure of natural rigidins by introducing hypoxanthine-like analogues with altered molecular parameters. This structural modification enables improved synthesis efficiency through the four-component reaction while maintaining or enhancing antiproliferative activity against cancer cell lines.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

Instead of directly using natural rigidins which are difficult to obtain, the patent creates synthetic copies (analogues) that replicate the core biological activity. These copied structures can be produced more efficiently through chemical synthesis methods, specifically the four-component reaction described in the patent.

Inventive Principle:
Principle #26Copying

2Reliability

If natural rigidins are used, then anticancer effects are observed, but availability from natural sources is insufficient

Engineering Contradiction:
Improveanticancer efficacyVSAvoidavailability
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The patent enables self-sufficient production of rigidin analogues through chemical synthesis, eliminating dependence on natural sources. The four-component reaction provides a self-contained synthetic pathway that can generate sufficient quantities of compounds without requiring extraction from natural materials.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

By changing the molecular parameters to create analogues rather than using exact natural structures, the patent enables scalable synthesis. The modified structures maintain the essential pharmacophore features for anticancer activity while allowing for efficient production through chemical methods.

Inventive Principle:
Principle #35Parameter changes

3Quantity of substance

If previous synthetic methods are used for rigidins, then some production is achieved, but synthesis efficiency remains poor

Engineering Contradiction:
Improvecompound productionVSAvoidsynthesis efficiency
Core Design Contradiction:
Quantity of substanceVSProductivity

Solution Approach 1:

The patent combines four different components in a single reaction step to construct the rigidin analogue structure. This merging of multiple synthetic steps into one four-component reaction dramatically improves overall synthesis efficiency by reducing the number of isolation and purification steps required.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The four-component reaction is designed so that all necessary molecular components are prepared and positioned in advance to react simultaneously. This preliminary organization of reactants allows for efficient one-step construction of the complex rigidin analogue structure, maximizing synthesis productivity.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS9334280B2Synthetic rigidin analogues as anticancer agents, salts, solvates and prodrugs thereof, and method of producing same
Publication Date: 2016.05.10 NEW MEXICO TECH UNIVERSITY RESEARCH PARK CORP
  • US9334280B2 patent drawing
  • US9334280B2 patent drawing
  • US9334280B2 patent drawing

AI summary

A compound having the Formula as follows:wherein R, R1 and R2 are selected from hydrogen, aryl, fused aryl, heteroaryl, saturated carbocylclic, partially saturated carbocyclic, saturated heterocyclic, partially saturated heterocyclic, C1-10 alkyl, haloalkyl, alkenyl, alkynyl, arylalkyl, arylalkenyl, arylalkynyl, heteroarylalkyl, heteroarylalkenyl, alkenylalkyl, alkynylalkyl, carbocycloalkyl, heterocycloalkyl, hydroxyalkyl, aminoalkyl, carboxyalkyl, nitroalkyl, cyanoalkyl, acetamidoalkyl, and acyloxyalkyl. A process for the preparation thereof is also provided.