(4R)-(+)-4-[(1,1-dimethylethyl)diphenylsilyloxy]cyclopent-2-en-1-one

(3R,5S)-(+)-3-acetoxy-5-(trimethylacetyloxy)cyclopent-1-ene

(3R,4R)-(+)-2E-2-[(2R,3R)-2,3-epoxy-7-(4-methoxyphenylmethoxy)hept-1-enyl]-4-[(1,1-dimethylethyl)diphenylsilyloxy]-3-(2Z-octenyl)-cyclopentanone