(4E,8S,9S,10E,12S,13R,14S,16R)-20-(benzyloxy)-9-(tertbutyldimethylsilyloxy)-13-(methoxymethoxy)-4,10,12,16-tetramethyl-,14,19-trimethoxy-2-azabicyclo[16.3.1]docosa-1(21),4,10,18(22),19-pentaen-3-one

(6S,2E)-ethyl 6-methoxy-2-methyl-7-oxohept-2-enoate

(6S,2E)-ethyl 6-methoxy-2-methyl-7-hydroxyhept-2-enoate

3-(benzyloxy)-5-bromo-2-methoxybenzaldehyde

(S,E)-ethyl 7-(tert-butyldimethylsilyloxy)-6-hydroxy-2-methylhept-2-enoate