(S)-(-)-ethyl 4-(t-butyldiphenylsilyloxy)-non-5-ynoate
(R)-(+)-γ-nonalactone
(S)-(-)-ethyl 4-(t-butyldiphenylsilyloxy)-4-(4-propylfuran-3-yl)butyrate
(S)-(-)-4-(t-butyldiphenylsilyloxy)-4-(4-propylfuran-3-yl)butyric acid
(S)-(-)-4-(t-butyldiphenylsilyloxy)-3-propyl-5,6-dihydrobenzo-7(4H)-furanone