(2R)-2-((3S)-3-(3-(benzyloxy)-2-iodo-4-methoxy-5-methylbenzyl)-6-methyl-2,5-dioxopiperazin-1-yl)-2-(7-methyl-6-((methylsulfonyl)oxy)benzo[d][1,3]dioxol-4-yl)ethyl acetate

tert-butyl (1R,5S)-3-((R)-2-acetoxy-1-(6-acetoxy-7-methylbenzo[d][1,3]dioxol-4-yl)ethyl)-10-(benzyloxy)-9-methoxy-8-methyl-2-methylene-4-oxo-1,2,3,4,5,6-hexahydro-1,5-epiminobenzo[d]azocine-11-carboxylate

(2R)-2-((3S)-3-(3-(benzyloxy)-2-iodo-4-methoxy-5-methylbenzyl)-6-methyl-2,5-dioxopiperazin-1-yl)-2-(6-hydroxy-7-methylbenzo[d][1,3]dioxol-4-yl)ethyl acetate

tert-butyl (S)-4-((R)-2-acetoxy-1-(7-methyl-6-((methylsulfonyl)oxy)benzo[d][1,3]dioxol-4-yl)ethyl)-2-(3-(benzyloxy)-2-iodo-4-methoxy-5-methylbenzyl)-5-methyl-3-oxo-3,4-dihydropyrazine-1(2H)-carboxylate

tert-butyl (2S)-4-((R)-2-acetoxy-1-(7-methyl-6-((methylsulfonyl)oxy)benzo[d][1,3]dioxol-4-yl)ethyl)-2-(3-(benzyloxy)-2-iodo-4-methoxy-5-methylbenzyl)-5-methyl-3,6-dioxopiperazine-1-carboxylate