Computed Properties of https://www.ambeed.com/products/2756-87-8.html, As a society publisher, everything we do is to support the scientific community – so you can trust us to always act in your best interests, and get your work the international recognition that it deserves. 2756-87-8, Name is (E)-4-methoxy-4-oxobut-2-enoic acid, SMILES is O=C(O)/C=C/C(OC)=O, belongs to quinuclidine compound. In a article, author is Gu, Jianhui, introduce new discover of the category.
Umeclidinium bromide, a drug used for chronic obstructive pulmonary disease, is synthesized through a new intermediate of phenyl(quinuclidin-4-yl)methanone. This novel method with simple operation flow and cheap reagents, makes it suitable for scale up. The overall four-step process provides umeclidinium bromide in 29% yield and the purity up to 99.83%. The X-ray crystal structure of the drug molecule was first reported.
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Reference:
Quinuclidine – Wikipedia,
,Quinuclidine | C7H13N | ChemSpider