tert-butyl (3R)-3-<(E)-2-ethoxycarbonylmethylene-pyrrolidin-1-yl>hexanoate

(5R,6S,8S,9S)-8-acetyl-6-ethyl-5-propyloctahydroindolizine

2,6-dimethylphenyl (2S,3S,4R,5R,8S,10R)-3-tert-butyldimethylsilyloxy-2,4-dimethyl-5,8-epoxy-10-[N-methyl-N-(toluene-4-sulfonyl)amino]tridecanoate

(5R,6S,8R,9S)-8-(2-methyl-[1,3]-dithiolan-2-yl)-6-ethyl-5-propyloctahydroindolizine

tert-butyl (3R)-3-(2-oxopyrrolidin-1-yl)hexanoate