3-(4-甲苯)丙酸

7-chloro-7-carboxybicyclo[4.1.0]hept-2-ene

8-chloro-8-carboxy-4-oxatricyclo<5.1.0.03, 5>octane

丙基丙二酸

8-bromo-8-carboxy-4-oxatricyclo[5.1.0.03,5]octane