[(S*)-2-(3-Benzyloxy-phenyl)-1-((2S*,4R*)-4-methyl-5-oxo-tetrahydro-furan-2-yl)-ethyl]-carbamic acid tert-butyl ester → [(1S*,2S*,4R*)-1-(3-Benzyloxy-benzyl)-4-butylcarbamoyl-2-hydroxy-pentyl]-carbamic acid tert-butyl ester

Participants

Reaction Conditions

Reaction Steps

[(S*)-2-(3-Benzyloxy-phenyl)-1-((2S*,4R*)-4-methyl-5-oxo-tetrahydro-furan-2-yl)-ethyl]-carbamic acid tert-butyl ester (4.0 g, 9.4 mmol) is dissolved in butylamine (200 ml) and stirred for 18 h in an heating bath of 90° C. The butylamine is evaporated and the residue is recrystallized from DCM/ether/hexane to give white crystals (4.42 g).

Provenance & Evidence