Steroids TRIZ Cases

Replacing animal-derived cholic acid with plant sterols eliminates supply constraints and contamination risks while enabling scalable production.

Amphipathic compounds with hydrophobic domains and PEG moieties anchor into cell membranes to provide quantitative immobilization.

A palladium(II) catalytic system converts steroid precursors into drospirenone using gaseous oxygen.

A multi-step synthetic process converts crude phytosterols into vegan cholesterol and vitamin D3 using tosylating, Grignard reactions, and irradiation.

Lithium metal in liquid ammonia reduces steroid oximes to primary amines, eliminating isomer mixtures and costly separation processes.

Dendrogenin A analogs restore tumor sensitivity to chemotherapy, reducing cytotoxic doses and addressing chemoresistance in acute myeloid leukemia.

Non-covalent binding of metformin to TGR5 ligands increases oral bioavailability by facilitating lower gastrointestinal tract absorption.

A purification process for chenodeoxycholic acid utilizes specific solvent mixtures and controlled crystallization temperatures to isolate the compound.

A drospirenone preparation uses CrVI or MnIV oxidants to form the product directly.

Selective crystallization in a specific solvent system removes 3β-Cholesta-5,7,22-triene-3,25-diol impurities to achieve high purity.

Plant sterols replace animal bile acids to synthesize obeticholic acid, resolving supply scarcity and contamination risks.

Using 3 to 5 carbon alcohol solvents eliminates toxic catalysts and reduces solvent volume while achieving high sterol derivative yields.

Segmented esterification and methylene introduction resolve low yields and hazardous material usage in drospirenone industrial synthesis.

Segmenting the steroid molecule into distinct rings optimizes activation efficacy while maintaining controllable synthesis complexity.

Silane functionalization modifies guayule argentatins to resolve low resin utility by increasing molecular weight and glass transition temperature.

Substituted aryl onium acid generators improve image resolution and wafer throughput by optimizing molecular parameters for efficient acid generation.

pH-driven precipitation separates target steroids from biomass and impurities, cutting solvent use and chromatography costs.

Coupling pleuromulin with ursodeoxycholic acid creates an ester that overcomes multidrug-resistant bacterial infections.

Benzoxazine monomers incorporate propargyl groups through a simplified two-step pathway that avoids complex protection sequences.

Tetrazole derivatives of bile acids modulate FXR and TGR5 receptors to treat metabolic disorders.

Fermentation of plant-derived sterols produces obeticholic acid, eliminating animal source contamination and reducing synthesis costs.

Synthesis from beta-sitosterol replaces animal bile acids to eliminate supply limitations and contamination risks in obeticholic acid manufacturing.

Cholic acid forms a mixed anhydride in acetone that reacts directly with a glycine ester, eliminating filtration steps and improving yield.

Plant sterol intermediates replace animal bile acids to eliminate contamination risks and improve obeticholic acid yields.

Novel abiraterone acetate synthesis process using aromatic bis(trifluoromethanesulfonimide and palladium catalysis.

UV irradiation opens the steroid B-ring, eliminating low-temperature constraints and simplifying production.

A synthesis process for sulfonylurea bile acid derivatives using Curtius rearrangement and hydrogenation to form carbamate intermediates.

Converts fish oil cholesterol to vitamin D3 via UV irradiation, reducing reaction time and toxicity compared to traditional methods.

Direct activation of bile acid carboxylic acids using pentafluorophenyl carbonate coupling agents generates intermediate derivatives for therapeutic applications.

Taurocholate-derived compounds bind to Clostridium difficile spores to block germination, preventing persistent infection and relapse during antibiotic therapy.

Angptl4 inhibitors reduce side effects on normal cells by selectively targeting overexpressed proteins in pancreatic cancer.

Sulfonyl carbamate bile acid derivatives modulate the Farnesoid X Receptor, addressing inadequate therapeutic coverage of existing FXR modulators.

A drospirenone synthesis process uses gaseous oxygen with a TEMPO and ferric salt catalyst system.

Sulfate precipitation isolates limonin from water, avoiding expensive organic solvents and reducing process costs.

A nuclear payload linked to a steroid epitope accumulates in tumor cells via receptor binding.

A method synthesizing 25-hydroxy cholesterol using hydroxyl-containing reagents and catalysts.

Homogeneous solvents eliminate work-up complexity and column chromatography, yielding micronized abiraterone acetate with 10 μm particle size.

A segmented steroid synthesis process uses acetylation and trialkoxy orthoformate reaction to introduce methylene groups efficiently.

Phosphate ester prodrugs of ursodeoxycholic acid enhance aqueous solubility to address stability challenges in acute stroke treatment.

Alkali metal hydroxides cleave amide groups in alcohol solutions to produce thioic acid intermediates for fluticasone propionate synthesis.

An iodized benzene ring quencher mitigates shot noise and acid blur to maintain resolution margins.

Crystallizing potassium fulvestrant 3-trifluoroborate replaces unstable oily intermediates, eliminating chromatography to achieve purity above 95%.

Cyclic amino acid derivatives resolve toxicity contradictions by enabling polymerization via localized reactive moieties for biodegradable resins.