反应详情

0.12 g of isomer B of t-butyl α-[6-(1-butoxycarbonyl-3-phenylpropylamino)-5-oxo-2-phenylperhydro-1,4-thiazepin-4-yl]acetate (prepared as described in Example 19 above) was subjected to de-t-butylation with trifluoroacetic acid in the manner described in Example 3, to give 78 mg of the title compound as an amorphous solid.