二甲醇缩甲醛 、
(1S,2R,3R,4aR,7R)-2,3-Dihydroxy-7-((S)-2-hydroxy-1-methyl-ethyl)-1-methyl-1,3,4,5,6,7-hexahydro-2H-naphthalene-4a-carbonitrile 在
phosphorus pentoxide 作用下,
生成 (1S,2R,3R,4aR,7R)-2,3-Bis-methoxymethoxy-7-((S)-2-methoxymethoxy-1-methyl-ethyl)-1-methyl-1,3,4,5,6,7-hexahydro-2H-naphthalene-4a-carbonitrile