7-(benzyloxy)-2-(3-(benzyloxy)-4-methoxyphenyl)-5-isopropoxy-6-methoxy-4-oxo-4H-chromen-3-yl 4-methylbenzenesulfonate

7-(benzyloxy)-2-(4-(benzyloxy)phenyl)-5-isopropoxy-6-methoxy-4-oxo-4H-chromen-3-yl 4-methylbenzenesulfonate

7-(benzyloxy)-2-(4-(benzyloxy)-3-methoxyphenyl)-5-isopropoxy-6-methoxy-4H-chromen-4-one

2-acetyl-5-(benzyloxy)-3-isopropoxy-4-methoxyphenyl 4-methoxybenzoate

7-(benzyloxy)-5-isopropoxy-6-methoxy-2-(4-methoxyphenyl)-4-oxo-4H-chromen-3-yl 4-methylbenzenesulfonate