Bimatoprost Ester Derivatives for Selective Ocular and Follicular Action

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Solution Overview

Problem

Bimatoprost administration leads to hypertrichosis and other unwanted effects, necessitating the development of derivatives or prodrugs that effectively treat ocular hypertension, hair loss, inflammatory skin diseases, and adipose tissue reduction while minimizing side effects.

Innovation Solution

Development of compounds with specific structures, such as those represented by Formula (I) and its derivatives, which are administered as pharmaceutical compositions to induce hair growth, lower intraocular pressure, treat glaucoma, manage inflammatory skin diseases, and reduce adipose tissue, while minimizing hypertrichosis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If bimatoprost is administered to treat ocular hypertension and glaucoma, then intraocular pressure is lowered, but hypertrichosis (increased hair growth) occurs as a side effect

Engineering Contradiction:
Improveefficacy in lowering intraocular pressureVSAvoidhypertrichosis
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The invention segments the pharmacological effects by using selective prostamide receptor agonists that target specific receptors (such as HPGL-2 receptor) responsible for intraocular pressure reduction while avoiding activation of receptors involved in hair growth. This receptor-specific segmentation allows therapeutic efficacy without hypertrichosis side effect.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by designing compounds with specific molecular structures ( Formula I with defined R groups) that confer selective affinity for ocular prostamide receptors versus hair follicle receptors. The local structural modifications at specific positions (R1-R6 substituents) create differential binding characteristics that achieve tissue-selective action.

Inventive Principle:
Principle #3Local quality

2Reliability

If bimatoprost is administered to treat hair loss, then hair growth is promoted, but unwanted hypertrichosis and altered pigmentation occur

Engineering Contradiction:
Improveefficacy in promoting hair growthVSAvoidhypertrichosis and altered pigmentation
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The invention segments the desired hair growth effect from unwanted hypertrichosis by using topical formulations with controlled delivery systems that concentrate the active compound at the hair follicle level while minimizing systemic absorption and diffusion to surrounding skin areas. This spatial segmentation achieves localized therapeutic effect without generalized side effects.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent employs local quality through derivatized compounds (Formula I with specific R group configurations) that have enhanced follicular selectivity. The molecular structure is optimized to bind preferentially to prostamide receptors in the hair follicle bulge region while having reduced affinity for receptors in surrounding skin, thereby achieving localized hair growth promotion without hypertrichosis.

Inventive Principle:
Principle #3Local quality

3Reliability

If derivatives of bimatoprost are developed to reduce side effects, then selectivity is improved, but compound complexity increases

Engineering Contradiction:
Improveselectivity and reduced side effectsVSAvoidcompound structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The invention applies parameter changes by systematically modifying specific molecular parameters (substituent types at R1-R6 positions, chain lengths, ring structures) to optimize the balance between selectivity and complexity. By varying these parameters in a structured manner, the patent identifies compounds with enhanced receptor selectivity while maintaining reasonable structural complexity for synthetic feasibility.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent uses composite material principles by combining the core bimatoprost structure with various substituent groups (alkyl, aryl, heteroaryl, cycloalkyl groups at different positions) to create a series of derivatized compounds. This composite approach allows systematic exploration of structure-activity relationships to achieve optimal selectivity without excessive complexity.

Inventive Principle:
Principle #40Composite materials

Data Source

PatentUS8865766B2Ester derivatives of bimatoprost compositions and methods
Publication Date: 2014.10.21 ALLERGAN INC
  • US8865766B2 patent drawing
  • US8865766B2 patent drawing
  • US8865766B2 patent drawing

AI summary

Provided herein, inter alia, are prodrugs of bimatoprost, methods of using the same and compositions including the same.