N-[3-((1R,6S)-6-benzyloxymethyl-1-hydroxymethyl-cyclohex-3-enyl)-propyl]-2-((S)-2,2-dimethyl-1,3-dioxolan-4-yl)-acetamide

N-[3-((1R,6S)-6-benzyloxymethyl-1-formyl-cyclohex-3-enyl)-propyl]-2-((S)-2,2-dimethyl-1,3-dioxolan-4-yl)-acetamide

(1R,2'S,6S,9a'S)-6-(benzyloxymethyl)-2'-(hydroxymethyl)-6',7',8',9a'-tetrahydro-2'H-spiro[cyclohex[3]ene-1,9'-pyrido[2,1-b][1,3]oxazin]-4'(3'H)-one

(1R,2'S,6S,9a'S)-6-(benzyloxymethyl)-2'-((triisopropylsilyloxy)methyl)-6',7',8',9a'-tetrahydro-2'H-spiro[cyclohex[3]ene-1,9'-pyrido[2,1-b][1,3]oxazin]-4'(3'H)-one

(1R,2S,2'S,6S,9a'S)-6-(benzyloxymethyl)-2-hydroxy-2'-((triisopropylsilyloxy)methyl)-6',7',8',9a'-tetrahydro-2'H-spiro[cyclohex[3]ene-1,9'-pyrido[2,1-b][1,3]oxazin]-4'(3'H)-one