FR901464 Synthesis via Segmentation and Merging

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Solution Overview

Problem

The synthesis of potent analogs of the natural product FR901464, a potential anticancer agent, is hindered by a lengthy process involving numerous steps, limiting the development of more effective compounds for cancer treatment.

Innovation Solution

Development of novel analogs of FR901464 and new methods for preparing FR901464 and its analogs, including specific compounds and pharmaceutical compositions that conform to specific structural formulas, which are designed to enhance antitumor activity with improved synthesis efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional synthesis methods are used to prepare FR901464 analogs, then antitumor activity can be achieved, but the synthesis process becomes excessively lengthy and complex

Engineering Contradiction:
Improveantitumor activityVSAvoidsynthesis complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The synthesis is divided into modular segments: (1) preparation of key intermediate compounds with specific stereochemistry, (2) coupling reactions to assemble the macrocyclic core, and (3) final functional group installations. This segmentation allows each step to be optimized independently and facilitates parallel synthesis of different analogs.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Chiral centers are established early in the synthesis through asymmetric catalysis or chiral pool starting materials, eliminating the need for later stereoselective transformations. Protecting group strategies are predetermined to minimize deprotection/reprotection cycles.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If traditional synthesis methods are used to prepare FR901464 analogs, then potent antitumor compounds can be obtained, but the number of synthesis steps increases to forty or more

Engineering Contradiction:
Improveantitumor activityVSAvoidsynthesis efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

Multiple transformations are combined into single operational steps where possible. For example, one-pot sequences that perform protection, coupling, and deprotection in sequence reduce the total number of isolation and purification steps, directly decreasing the synthesis step count while maintaining analog potency.

Inventive Principle:
Principle #5Merging (Combining)

3Loss of time

If the synthesis process is simplified, then development time can be reduced, but the ability to produce potent analogs may be compromised

Engineering Contradiction:
Improvedevelopment timeVSAvoidantitumor activity
Core Design Contradiction:
Loss of timeVSReliability

Solution Approach 1:

Reaction conditions are optimized to proceed under milder, faster conditions without sacrificing selectivity. Temperature, solvent, and catalyst parameters are tuned to accelerate rate-determining steps while maintaining the stereochemical integrity and structural precision required for antitumor activity.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS7825267B2Synthesis of FR901464 and analogs with antitumor activity
Publication Date: 2010.11.02 UNIV OF PITTSBURGH OF THE COMMONWEALTH SYST OF HIGHER EDUCATION
  • US7825267B2 patent drawing
  • US7825267B2 patent drawing
  • US7825267B2 patent drawing

AI summary

The present invention provides novel analogs of FR901464, as well as an improved methodology for preparing FR901464 and its analogs. These compounds display an anti-cancer activity and are candidates for therapies against a number of disease states associated with dysfunctional RNA splicing.