(2R,3R)-methyl 2-(tert-butoxycarbonylamino)-3-(7-methoxybenzo[d][1,3]dioxol-5-yl)-5-oxohexanoate

(R,E)-4-(7-methoxybenzo[d][1,3]dioxol-5-yl)but-3-en-2-yl 2-(tert-butoxycarbonylamino)acetate

tert-butyl (1R,2R,6R)-4-(benzyloxy)-2-hydroxy-6-(7-methoxybenzo[d][1,3]dioxol-5-yl)cyclohex-3-enylcarbamate

tert-butyl (1R,2S,3S,4R,6R)-4-(benzyloxy)-2,3-dihydroxy-4-methoxy-6-(7-methoxybenzo[d][1,3]dioxol-5-yl)cyclohexylcarbamate

tert-butyl (1R,2S,3R,4S,6R)-2,3,4-trihydroxy-6-(7-methoxybenzo[d][1,3]dioxol-5-yl)cyclohexylcarbamate