benzyl N-[(2S,3R)-2-hydroxy-1-[(R)-(4-methylphenyl)sulfinyl]decan-3-yl]carbamate 、
2,2-二甲氧基丙烷 在
camphor-10-sulfonic acid 作用下,
以
二氯甲烷 为溶剂,
以85%的产率得到benzyl (4R,5S)-4-heptyl-2,2-dimethyl-5-[[(R)-(4-methylphenyl)sulfinyl]methyl]-1,3-oxazolidine-3-carboxylate