苯甲酰氯 、 N-Phenyl-4t,5t-dihydroxy-3,4,5,6-tetrahydro-2H-1,2-oxazinyl-(6r)-methyl-
-ether, 2-Phenyl-6β-(tetrahydropyranyl-(2)-oxymethyl)-4α,5α-dihydroxy-tetrahydro-1,2-oxazin 在
吡啶 作用下,
反应 3.0h,
生成 2-Phenyl-6β-(2-tetrahydropyranyl-oxymethyl)-4α,5α-dibenzoyloxy-tetrahydro-1,2-oxazin