Fused-Ring MGAT2 Inhibitor Compounds for Reduced Fat Absorption

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Solution Overview

Problem

Existing compounds for inhibiting monoacylglycerol acyltransferase 2 (MGAT2) activity are not satisfactory in terms of efficacy and side effects for treating obesity, which is primarily caused by excessive intake of neutral fat.

Innovation Solution

Development of novel compounds represented by a specific chemical formula with MGAT2 inhibitory activity, including pharmaceutically acceptable salts, to target and inhibit MGAT2 activity in the small intestine, thereby reducing fat absorption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing compounds are used to inhibit MGAT2 activity, then some inhibitory effect is achieved, but efficacy and side effects are not satisfactory

Engineering Contradiction:
ImproveMGAT2 inhibitory activityVSAvoidside effects
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies parameter changes by systematically modifying chemical structure parameters of MGAT2 inhibitors. Specifically, the invention changes the core ring structure from conventional options to a fused ring system comprising a 5-membered ring with one nitrogen atom fused to a 6-membered aromatic ring, with specific substituent patterns. This structural parameter optimization achieves superior MGAT2 inhibitory activity (IC50 values in the nanomolar range) while improving pharmacological profile and reducing side effects compared to existing compounds

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent employs composite material principles by creating a complex fused ring structure that combines multiple heterocyclic components. The compound consists of a 5-membered ring containing nitrogen fused to a 6-membered aromatic ring, with specific substituents including halogen atoms, alkyl groups, and heterocyclic moieties. This composite molecular architecture achieves enhanced binding affinity to MGAT2 while optimizing pharmacokinetic properties and reducing adverse effects

Inventive Principle:
Principle #40Composite materials

2Use of energy by moving object

If neutral fat intake is excessive, then caloric intake increases, but obesity and related disorders increase

Engineering Contradiction:
Improvecaloric intakeVSAvoidobesity and obesity-related disorders
Core Design Contradiction:
Use of energy by moving objectVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary action by administering MGAT2 inhibitors before or during fat absorption in the intestine. The compounds prevent the conversion of 2-monoacylglycerol to diacylglycerol, thereby blocking subsequent triglyceride synthesis and reducing fat absorption before it can be stored. This preliminary intervention prevents excessive caloric retention and obesity development without requiring changes to dietary intake

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent uses MGAT2 inhibitors as intermediary substances that mediate between dietary fat intake and fat storage. The compounds selectively inhibit MGAT2 enzyme activity in the intestine, which is the rate-limiting step in dietary fat resynthesis. This intermediary action reduces the efficiency of fat absorption and storage, thereby preventing obesity and related disorders while allowing normal dietary patterns to continue

Inventive Principle:
Principle #24Intermediary (Mediator)

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 synthesized compounds effectively inhibit MGAT2 activity, leading to reduced weight gain, suppression of insulin resistance, and prevention of fatty liver formation, while minimizing side effects.

Implementation Method 1

an acyl group is transferred from the free fatty acids to the 2-monoacylglycerol by the action of monoacylglycerol acyltransferase (MGAT). The diacylglycerol formed is further converted into neutral fat by the action of diacylglycerol acyltransferase (DGAT)

Methodology Applied
Scientific EffectEnzyme inhibition: Enzyme

Data Source

PatentUS12454533B2Fused ring derivative having MGAT-2 inhibitory activity
Publication Date: 2025.10.28 SHIONOGI & CO LTD
  • US12454533B2 patent drawing
  • US12454533B2 patent drawing
  • US12454533B2 patent drawing

AI summary

The present invention provides the compound represented by the following formula (I):wherein a moiety represented by formula:or the like;y is 0 or 1; R1 is hydrogen or the like; R2a and R2b are taken together with an adjacent carbon atom to form ring B; ring B is a substituted or unsubstituted non-aromatic carbocycle or the like; R3a is hydrogen or the like; R3b is hydrogen or the like; R4a is represented by formula:L1 is a single bond or the like; L2 is —C(═O)— or the like; La is a single bond or the like; R7 is substituted or unsubstituted alkyl or the like; R4b is substituted or unsubstituted alkyl or the like; R4c is each independently halogen or the like.