(Z)-ethyl 5-(tert-butyldimethylsilyloxy)-3-methylpent-2-enoate

5-{[(tert-butyldimethyl)silyl]oxy}pent-2-ynoic acid ethyl ester

methyl (Z)-5-hydroxy-3-methyl-2-pentanoate

4-甲基-5,6-二氢吡喃-2-酮