(1R,1'S,5R,8aR)-3-oxo-1-((1'-phenylmethoxy)hexane)-1,5,6,8a-tetrahydro-oxazolo[3,4-a]pyridin-5-yl acetic acid methyl ester

[(1R,1'S,5R,9R)-3-oxo-1-((1'-phenylmethoxy)hexyl)-1,5,6,8a-tetrahydrooxazolo[3,4-a]pyridin-5-yl]acetic acid chloride

(1'R,2R,2'S,6R)-N-benzyl-2-[6-(2'-phenylmethoxy-1'-hydroxy-heptyl)-1,2,3,6-tetrahydro-pyridin-2-yl]-N-(4-hydroxy-butyl)-acetamide

(1R,1'S,5R,8aR)-N-benzyl-2-[3-oxo-1-((1'-phenylmethoxy)hexane)-1,5,6,8a-tetrahydro-oxazolo[3,4-a]pyridin-5-yl]-N-4-hydroxy-butyl acetamide

(1'R,4R,2'S,15aR)-13-benzyl-4-(2'-phenylmethoxy-1'-hydroxy-heptyl)-8-(toluene-4-sulfonyl)-1,4,6,7,8,9,10,11,12,13,15,15a-dodecahydro-5H-4a,8,13-triaza-benzocyclotridecen-14-one