反应详情

In substantially the same manner as in Working Example 18, 2-[6-[3-methoxy-4-(5-methyl-2-phenyl-4-oxazolylmethoxy)phenyl]hexyl]-1,3-dioxolan was condensed with 2,4-oxazolidinedione. The condensate was subjected to catalytic hydrogenation to yield 5-[7-[3-methoxy-4-(5-methyl-2-phenyl-4-oxazolylmethoxy)phenyl]heptyl]-2,4-oxazolidinedione, which was recrystallized from ethyl acetate-hexane to give colorless prisms, m.p.109-111° C.