Synfacts 2021; 17(12): 1301
DOI: 10.1055/s-0041-1737097
Synthesis of Natural Products and Potential Drugs

Synthesis of AZD7624

Philip Kocienski
Steven A. * et al. AstraZeneca R&D, Macclesfield, UK
Expedited Kilolab Development of AZD7624 Using Kulinkovich–de Meijere Cyclopropanation.

Org. Process Res. Dev. 2021;
25: 2351-2366
DOI: 10.1021/acs.oprd.1c00283.


The p38α mitogen-activated protein kinase is expressed and activated in several cell types associated with chronic obstructive pulmonary disease (COPD). AZD7624 inhibits p38a but its development was halted after phase 2a trials failed to show any benefit over placebo. The synthesis depicted delivered 5.3 kg of API.



A noteworthy feature of the synthesis is the implementation of the de Meijere modification of the Kulinkovich cyclopropanation that converts the benzonitrile G to the cyclopropylamine H in 37% yield on a 22.6 mol scale. On a laboratory scale the yield was 57%. For an alternative synthesis of AZD7624, see: WO 2017 162304 A1.


Publication History

Publication Date:
17 November 2021 (online)

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