2,5-di((S)-sec-butyl)-3,6-bis(2-(trimethylsilyl)ethoxy)pyrazine 1,4-dioxide

2,5-di((S)-sec-butyl)-4-methoxy-3-oxo-6-(2-(trimethylsilyl)ethoxy)-3,4-dihydropyrazine 1-oxide

4’-(benzyloxy)-3-chloro-6-methoxy-[1,1’-biphenyl]-2,5-dione

4’-(benzyloxy)-3,6-dimethoxy-[1,1’-biphenyl]-2,5-dione

4-(benzo[d][1,3]dioxol-5-yl)-4’-(benzyloxy)-3,6-dimethoxy-[1,1’-biphenyl]-2,5-dione