[3-[[(1,1-Dimethylethoxy)carbonyl]amino-2-hydroxy-4-phenylbutyl]amino-2-hydroxy-4-phenylbutyl]carbamic acid, phenylmethyl ester → Benzyl carbamate

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Reaction Steps

Compound 186 was prepared as a colorless solid from a 1:1 mixture of 1b(i) and 1b(ii) by a procedure analogous to that used for the synthesis of Compound 185d. mp 90°-95° C.; [α]D =-4.0° (c 0.10, MeOH). MS: (M+H)+ @578+Analysis calc. for C33H43N3O6. 0.9 6H2O:

Provenance & Evidence