Received February $0, 1969 d2-erythro-2-Benzylamino-3-hydroxy- 4ethylenedioxyoctadecanoic acid (15), prepared from dl-trans-2, 3-epoxy- 4ethylenedioxyoctadecanoic acid (14) and benzylamine, was converted into methyl dl- erythro-2-benzyl-amino-3-hydroxy-4-oxooctadecanoate hydrochloride (19). The ester hydrochloride 19 was reduced with lithium aluminum hydride to yield dE2-benzylamino-l, ...