(1Z,3E,6E,8E,10Z)-11-tert-Butyl-1-tert-butylsulfanyl-13-trimethylsilanyl-trideca-1,3,6,8,10-pentaen-12-yn-5-one

(6R)-ethynyl-(2R)-hydroxymethyl-4-methylene-(5S)-(triisopropylsilanoxy)-tetrahydropyran

(2R)-ethynyl-(6R)-iodomethyl-4-methylene-(3S)-(triisopropylsilanyloxy)-tetrahydropyran

(2R)-(t-butyldimethylsilanyloxymethyl)-(6S)-ethynyl-4-(triethylsilanyloxy)-3,6-dihydro-2H-pyran

(6R)-(t-butyldimethylsilanyloxymethyl)-(2R)-ethynyl-4-methylene-(3S)-(triisopropylsilanoxy)-tetrahydropyran