反应详情

Following the procedure described in Example 43, 270 mg of isomer B of t-butyl α-[6-(1-ethoxycarbonyl-3-phenylpropylamino)-2-(2-furyl)-5-oxoperhydro-1,4-thiazepin-4-yl]acetate [prepared as described in Example 56(g)] were de-t-butylated using trifluoroacetic acid, to afford 180 mg of the title compound as a powder.