2,6-dimethyl-4-methoxypyrylium perchlorate 、
normetazocine 在
sodium tetrahydroborate 作用下,
生成 (2S,6R)-3-(2,6-Dimethyl-tetrahydro-pyran-4-yl)-6,11-dimethyl-1,2,3,4,5,6-hexahydro-2,6-methano-benzo[d]azocin-8-ol 、
(2S*,6R*,11R*)-6,11-dimethyl-3-(4H-2,6-dimethyl-2,3-dihydropyran-4-yl)-1,2,3,4,5,6-hexahydro-2,6-methano-3-benzazocin-8-ol