Galecto has filed a patent for a process to prepare a compound of formula (X) by reacting a compound of formula (IX) with an acetylating agent in the presence of a base in a suitable solvent and at a suitable temperature. The process is suitable for large scale synthesis. GlobalData’s report on Galecto gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Galecto, NSAID cancer drugs was a key innovation area identified from patents. Galecto's grant share as of June 2023 was 1%. Grant share is based on the ratio of number of grants to total number of patents.
A recently filed patent (Publication Number: US20230137160A1) describes a process for the large-scale synthesis of a compound with a specific chemical formula (X). The process involves purifying and isolating the compound as a solid.
The process utilizes an acetylating agent, which can be selected from options such as acetic anhydride, acyl chloride, acetic acid with an activating agent, acid catalysis under dehydrating conditions, or transesterification using an acyl ester.
A suitable base is also used in the process, which can be chosen from tertiary amines like triethylamine or diisoproylethylamine, or aromatic amine bases like pyridine or imidazole. In some cases, a stronger base like dimethylaminopyridine may be added.
The process requires a suitable solvent, which can be cyclic or acyclic ethereal solvents like 1,4-dioxane or 2-methyl tetrahydrofuran, ester solvents like ethyl acetate or isopropyl acetate, or aromatic solvents like toluene.
The reaction takes place at a temperature ranging from -5°C to 40°C. The addition of the acetylating agent can be done over a period of 30 minutes or more than 3 hours. The overall reaction time can vary from 1 to 24 hours.
The patent also includes preceding steps for preparing compounds with formulas IX, VIII, VII, and VI. These steps involve various acids, solvents, temperatures, and reaction times.
For example, the process for preparing the compound with formula IX may involve using an acidic cation exchange resin, dilute hydrochloric acid, or p-toluene sulfonic acid as the acid. The suitable solvent can be a mixture of an organic solvent and water, such as 1,4-dioxane, 2-methyl tetrahydrofuran, tetrahydrofuran, or acetonitrile and water. The temperature ranges from 25°C to 70°C, and the reaction time is 1 to 24 hours.
The patent provides detailed information on the process steps, including the choice of reagents, solvents, temperatures, and reaction times. This process is suitable for large-scale synthesis and purification of the compound with formula X.
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