(4R)-(+)-T-丁基二甲基硅氧-1-酮

(2RS,4SR)-acetic acid 4-hydroxycyclopent-2-enyl ester

环戊二烯

4-(tetrahydro-pyran-2-yloxy)-cyclopent-2-enone

(+/-)-cis-4-(2'R*-tetrahydropyranyloxy)-2-cyclopentenol