1573000-28-8Relevant articles and documents
Preparation method of
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Paragraph 0133-0135, (2021/09/15)
The preparation method comprises the following steps 1-11: Wherein. ROH (Formula X) is a chiral alcohol and the like, PG is a hydroxy protecting group, a compound of Formula VI and a compound of Formula V are the chiral auxiliary of the present invention. To the invention, the chiral auxiliary base ROH compound and the chiral alcohol X (Formula VI) are used for preparing the chiral auxiliary base-type compound of formula V IV and the compound of Formula XI, and the compound of formula IV can be prepared through three-step simple operation steps of chiral auxiliary base. Be applicable to industrial production.
Preparation method of key intermediate of LCZ-696
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Paragraph 0037; 0038; 0039; 0040; 0041, (2018/07/30)
The invention provides a novel method for preparing a key intermediate (2R,4S)-5-(biphenyl-4-yl)-4-[(tert-butoxycarbonyl)amino]-2-methylpentanoic acid of an anti-cardiac failure drug LCZ-696. The reaction route of the method is as follows: formula (shown in the description). According to the preparation method provided by the invention, the synthetic route is simple, the operation is simple and convenient, the cost is low and the implementation of industrial production is easy.
NEW PROCESS
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Paragraph 0173; 0174; 0175, (2015/08/04)
The invention relates to a new enantioselective process for producing useful intermediates for the manufacture of NEP inhibitors or prodrugs thereof, in particular NEP inhibitors comprising a γ-amino-δ-biphenyl-α-methylalkanoic acid, or acid ester, backbone.