Selective Androgen Receptor Modulators for Tissue-Specific Binding

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Solution Overview

Problem

Current treatments for hormone-related conditions associated with androgen decline, such as anemia, arthritis, and muscle wasting, lack effective selective androgen receptor modulators (SARMs) that can selectively target androgen receptors without the side effects of traditional androgenic steroids.

Innovation Solution

Development of novel heterocyclic compounds, specifically those of Formula 1, 2, or 3, which act as selective androgen receptor modulators (SARMs), capable of modulating androgen receptor activity to treat conditions like anemia, arthritis, and muscle wasting by selectively binding to androgen receptors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional androgenic steroids are used to treat hormone-related conditions, then androgen receptor activity is activated, but side effects occur due to non-selective binding

Engineering Contradiction:
Improveselectivity of androgen receptor modulationVSAvoidside effects of traditional androgenic steroids
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies local quality by designing compounds with specific heterocyclic structures (Formulae 1-3) that target particular androgen receptor sites or isoforms. The molecular structure incorporates specific functional groups (A, X, Y, Z substituents) that provide selective binding to androgen receptors in target tissues while avoiding non-selective binding to other androgen receptors, thereby achieving tissue-selective androgen receptor modulation without the broad side effects of traditional steroids

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent employs parameter changes by systematically varying molecular parameters of the heterocyclic compounds (different heterocyclic rings, substituent positions, chain lengths R1-R10) to optimize selectivity. By adjusting these chemical parameters, the compounds achieve differential binding affinity for androgen receptors in different tissues, enabling selective activation in target tissues while minimizing activation in tissues that cause side effects

Inventive Principle:
Principle #35Parameter changes

2Object-affected harmful factors

If new heterocyclic SARM compounds are developed to achieve selectivity, then side effects are reduced, but compound complexity increases

Engineering Contradiction:
Improveside effects of traditional androgenic steroidsVSAvoidmolecular structure complexity of SARM compounds
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent applies segmentation by dividing the androgen receptor modulation function into distinct molecular segments represented by the heterocyclic core structure and various substituent groups (A, X, Y, Z, R1-R10). Each segment can be independently optimized for specific functions: the heterocyclic core provides the primary binding interaction, while substituents fine-tune selectivity and pharmacokinetic properties. This modular segmentation allows systematic development of selective compounds without requiring complete redesign of the entire molecular structure

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent employs composite materials by creating hybrid molecular structures that combine heterocyclic chemistry with steroid-like pharmacophores. The compounds integrate diverse chemical moieties (heterocyclic rings, alkyl chains, aromatic groups) into a unified molecular architecture that achieves both selectivity and biological activity. This composite approach allows the molecule to interact with multiple binding sites on the androgen receptor simultaneously, enhancing selectivity while managing structural complexity

Inventive Principle:
Principle #40Composite materials

Data Source

PatentEP2925725B1Novel selective androgen receptor modulators
Publication Date: 2016.11.09 PFIZER INC
  • EP2925725B1 patent drawing
  • EP2925725B1 patent drawing
  • EP2925725B1 patent drawing

AI summary

The present invention relates to a compound of Formula 1, 2 or 3: wherein A is N or –CR0 --, where R0 is hydrogen, C1 -C6 linear or branched chain alkyl, etc., Z is –CRe --, or, –N--, where Re is hydrogen, C1 -C6 linear or branched chain alkyl,etc.; R1 is hydrogen, C1 -C6 linear or branched chain alkyl, etc.; R2 are independently hydrogen or C1 -C6 linear or branched chain alkyl; R3 and R4 are independently hydrogen, C1 -C6 linear or branched chain alkyl, etc.;. R5 and R6 are independently hydrogen or C1 -C6 linear or branched chain alkyl, etc.; R8 is hydrogen, C1 -C6 linear or branched chain alkyl, etc.; R9 and R10 are independently hydrogen or C1 -C6 linear or branched chain alkyl, etc.; Q is --CO--, --(CH2 )q --, --(CHRS )q --, or –(CRS Rt )q--, where RS and Rt are independently C1 -C6 linear or branched chain alkyl, aryl, alkylaryl, heteroaryl or alkylheteroaryl; where q is 0, 1, 2, or 3; and, where n is 0, 2, 3, 4 or 5; or, a pharmaceutically acceptable salt thereof, to compositions containing such compounds; and to the uses of such compounds in the treatment of various diseases, particularly, those affected or mediated by the androgen receptor.