(S)-N-benzyloxycarbonyl-6,7-dihydroxy-1-(3,4,5-trimethoxybenzyl)-1,2,3,4-tetrahydroisoquinoline
(S)-N-benzyloxycarbonyl-6-benzyloxy-7-hydroxy-1-(3,4,5-trimethoxybenzyl)-1,2,3,4-tetrahydroisoquinoline
(-)-Trimetoquinol
(S)-N-benzyloxycarbonyl-6-benzyloxy-7-methoxy-1-(3,4,5-trimethoxybenzyl)-1,2,3,4-tetrahydroisoquinoline