(-)-(1'S,4aR,10aR)-3,4,4a,5,10,10a-hexahydro-9-(1'-hydroxyethyl)-6-methoxy-4-methyl-2H-naphth[2,3-b]-1,4-oxazine 、 tetra(n-butyl)ammonium hydrogen sulfate 、
碘甲烷 以
二氯甲烷 为溶剂,
生成 (-)-(1'S,4aR,10aR)-3,4,4a,5,10,10a-hexahydro-9-(1'-methoxyethyl)-6-methoxy-4-methyl-2H-naphth[2,3-b]-1,4-oxazine