tert-butyl ((3S,8R,9R,10S)-8-(cyclopentylmethyl)-9-hydroxy-10-methyl-2-oxooxecan-3-yl)carbamate 、 trimethoxonium tetrafluoroborate 在
1,8-双二甲氨基萘 作用下,
以
二氯甲烷 为溶剂,
以75%的产率得到tert-butyl ((3S,8R,9R,10S)-8-(cyclopentylmethyl)-9-methoxy-10-methyl-2-oxooxecan-3-yl)carbamate