1-(p-Methylsulfonyloxybenzyl)-6-methoxy-7-benzyloxy-1,2,3,4-tetrahydroisochinolin;7-Benzyloxy-1,2,3,4-tetrahydro-6-methoxy-2-methyl-1-
-isochinolin;7-Benzyloxy-1,2,3,4-tetrahydro-6-methoxy-2-methyl-1-(p-methylsulfonyloxybenzyl)isochinolin;1-(7-benzyloxy-6-methoxy-2-methyl-1,2,3,4-tetrahydro-isoquinolin-1-ylmethyl)-4-methanesulfonyloxy-benzene