Highlyenantioselective hydrogenation of seven-membered cyclic imines, substituted dibenzo[b,f][1,4]oxazepines, was achieved, with up to 94% ee, by using the [Ir(COD)Cl](2)/(S)-Xyl-C(3)*-TunePhos complex as the catalyst in the presence of morpholine-HCl.
Provided herein is a method for preparing the compound
comprising contacting the compound
with 10% Pd/C and hydrogen in methanol/ethyl acetate. Also provided herein are pharmaceutical compositions of the prepared compound and their use in methods for the treatment of cancer.