methyl 7-(oxan-2-yloxy)hept-5-ynoate

methyl 7-bromohept-5-enoate

methyl (Z)-7-((tetrahydro-2H-pyran-2-yl)oxy)hept-5-enoate

5-溴戊酸

3,3a,6,6a-tetrahydro-2H-cyclopenta[b]furan-2-ol