(S)-5-(tert-Butyl-diphenyl-silanyloxy)-10-isopropenyl-3-oxo-15-oxa-bicyclo[10.2.1]pentadeca-1(14),12-dien-6-yne-13-carboxylic acid tert-butyl ester

(3S)-8-(t-butyldiphenylsilyloxy)-10-hydroxy-3-isopropenyl-13-(p-methoxybenzyloxy)-6,11-tridecadiynal

t-butyl (5S)-12-(t-butyldimethylsilyloxy)-10-(t-butyldiphenylsilyloxy)-15-hydroxy-5-isopropenyl-3-keto-8,13-pentadecadiynoate