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AKOS B000853 synthesis

2synthesis methods
-

Yield:-

Steps:

Multi-step reaction with 5 steps
1.1: ammonium acetate; acetic acid / toluene / Dean-Stark; Reflux
1.2: 3 h / 50 °C
2.1: dmap / pyridine / 3.17 h / 0 - 55 °C
3.1: potassium hydroxide; water / ethanol / 5 h / Reflux
4.1: triphenylphosphine / tetrahydrofuran / 0.5 h / 0 °C
4.2: 0 - 20 °C
5.1: trifluoroacetic acid / dichloromethane / 18 h / 20 °C

References:

Titchenell, Paul M.;Hollis Showalter;Pons, Jean-Fran?ois;Barber, Alistair J.;Jin, Yafei;Antonetti, David A. [Bioorganic and Medicinal Chemistry Letters,2013,vol. 23,# 10,p. 3034 - 3038]