(1S,2R,2'R,5R,6R,7R,8R,9R,12S,13S,17R)-15-(4-bromophenyl)-7,9-dihydroxy-2,5,6,8,12,17-hexamethyl-4,14,16-trioxaspiro[bicyclo[11.3.1]heptadecane-10,2'-oxiran]-3-one

(1S,2R,5R,6R,7R,8R,9R,12S,13S,17R)-15-(4-bromophenyl)-7,9-dihydroxy-2,5,6,8,12,17-hexamethyl-10-methylene-4,14,16-trioxabicyclo[11.3.1]heptadecan-3-one

Oleandomycin

6-[4-(dimethylamino)-3-hydroxy-6-methyloxan-2-yl]oxy-8,14-dihydroxy-5,7,9,12,13,15-hexamethyl-1,11-dioxaspiro[2.13]hexadecane-10,16-dione

(1S,2R,2'R,5R,6R,7S,8R,12S,13S,17R)-15-(4-bromophenyl)-7-hydroxy-2,5,6,8,12,17-hexamethyl-4,14,16-trioxaspiro[bicyclo[11.3.1]heptadecane-10,2'-oxirane]-3,9-dione

(2S,3R,4S,6R)-2-(((3R,5R,6S,7R,8R,11R,12S,13S,14S,15S)-6,12-dihydroxy-5,7,8,11,13,15-hexamethyl-4,10-dioxo-1,9-dioxaspiro[2.13]hexadecan-14-yl)oxy)-4-(dimethylamino)-6-methyltetrahydro-2H-pyran-3-yl acetate