反应详情

3.25 g of t-butyl α-[2-(2-naphthyl)-5-oxo-6-phthalimidoperhydro-1,4-thiazepin-4-yl]acetate [prepared as described in step (f) above] were subjected to dephthaloylization with methylhydrazine in the same manner as described in Example 36(g), to give 2.6 g of the title compound as an amorphous powder.