(S)-2,10-dibenzyloxy-3,9-dimethoxytetrahydroprotoberberine

14-(S)-3,9-dimethoxyl-2,10-diisopropoxy-tetrahydroprotoberberine

2-(2-(tert-butyldimethylsilyloxy)ethyl)-5-isopropoxy-4-methoxybenzaldehyde

(4-isopropoxy-3-methoxyphenyl)-N,N-dimethylmethanamine

methyl 6-(chloromethyl)-3-isopropoxy-2-methoxybenzoate