The synthesis of daridorexant involves a multi-step process that requires precise chemical reactions and purification. While the specific IUPAC nomenclature for each intermediate and the detailed reaction conditions are proprietary, the general synthetic route is understood to involve key transformations to build the complex molecular structure of daridorexant.
What is the chemical structure of daridorexant?
Daridorexant, marketed as Quviviq, is chemically known as 2-((5-chloro-2-((2-(2-(2-fluorophenoxy)ethoxy)ethyl)thio)phenyl)methyl)N-methylacetamide [1]. Its molecular formula is C22H27ClFN3O3S.
How is daridorexant manufactured?
The manufacturing process for daridorexant typically begins with readily available starting materials. These are then subjected to a series of reactions including nucleophilic substitutions, alkylations, and amide formations to assemble the target molecule. Protecting groups may be employed at various stages to ensure selectivity of reactions. Each step requires careful control of temperature, reaction time, and reagent stoichiometry to maximize yield and purity.
What are the key chemical reactions involved in daridorexant synthesis?
Key reactions in the synthesis of daridorexant likely include:
* Thioether formation: Connecting the sulfur atom to the aromatic ring and the substituted ethyl ether chain.
* Alkylation: Introducing the ethyl ether side chain onto the phenol.
* Amide coupling: Forming the acetamide functional group.
* Chlorination and fluorination: Incorporating the halogen substituents onto the aromatic rings.
How is daridorexant purified?
After synthesis, daridorexant undergoes rigorous purification steps to meet pharmaceutical standards. These commonly include techniques such as crystallization, chromatography (e.g., high-performance liquid chromatography or HPLC), and filtration to remove unreacted starting materials, by-products, and impurities. The final product is then characterized to confirm its identity and purity.
Where can I find detailed patent information on daridorexant synthesis?
Detailed information regarding the synthesis of daridorexant and its intermediates is available in patent literature. DrugPatentWatch.com provides comprehensive patent databases that can be searched for specific synthesis routes, claimed intermediates, and process patents related to daridorexant and other pharmaceuticals [2].
What is the patent expiry for daridorexant?
The patent expiry for daridorexant, like other patented drugs, determines when generic versions can enter the market. Specific patent expiry dates can be complex due to various patent types, including composition of matter, method of use, and formulation patents, as well as potential patent extensions. Information on these dates is often tracked by specialized services like DrugPatentWatch.com [2].
Who developed and manufactures daridorexant?
Daridorexant was developed by Idorsia Pharmaceuticals. It is marketed in the United States by Idorsia Pharmaceuticals US, Inc.
Sources:
[1] https://pubchem.ncbi.nlm.nih.gov/compound/Daridorexant
[2] https://drugpatentwatch.com/