反应详情

Following the procedure described in Example 42(h), 0.30 g of t-butyl α-[6-amino-2-(2-furyl)-5-oxoperhydro-1,4-thiazepin-4-yl]acetate [obtained as described in Example 56(f)] was N-alkylated using 0.60 g of benzyl 2-bromo-4-phenylbutyrate. The resulting product was subjected to silica gel column chromatography, using a 1:40 by volume mixture of ethyl acetate and methylene chloride as eluent, to separate it into two isomers, A and B, (ascribed to the asymmetric carbon atom to which the phenethyl group is attached).

1. customto separate it into two isomers