(2S,3R,4S,5S,6R,9S,11S)-9-Ethyl-4-hydroxy-2-(2-hydroxy-ethyl)-3,5,11-trimethyl-1-oxa-7-aza-spiro[5.5]undecan-8-one

(3S,5S,6S)-6-{(S)-1-[(4S,5S,6S)-6-(2-Benzyloxy-ethyl)-2,2,5-trimethyl-[1,3]dioxan-4-yl]-ethyl}-3-ethyl-5-methyl-tetrahydro-pyran-2-one

Butyric acid (R)-1-{(S)-1-[(4S,5S,6S)-6-(2-benzyloxy-ethyl)-2,2,5-trimethyl-[1,3]dioxan-4-yl]-ethyl}-2-methyl-allyl ester

(E)-(2S,6R)-6-[(4R,5S,6S)-6-(2-Benzyloxy-ethyl)-2,2,5-trimethyl-[1,3]dioxan-4-yl]-2-ethyl-4-methyl-hept-4-enoic acid

(2S,4S,5S,6R)-6-[(4R,5S,6S)-6-(2-Benzyloxy-ethyl)-2,2,5-trimethyl-[1,3]dioxan-4-yl]-2-ethyl-5-hydroxy-4-methyl-heptanoic acid amide