Sodium; (S)-2-{[(4S,5R)-3-((S)-2-tert-butoxycarbonylamino-pent-4-enoyl)-2,2,5-trimethyl-oxazolidine-4-carbonyl]-amino}-pent-4-enoate 在
N-溴代丁二酰亚胺(NBS) 作用下,
以
四氢呋喃 为溶剂,
生成
{(S)-1-[(4S,5R)-4-((3S,5R)-5-Bromomethyl-2-oxo-tetrahydro-furan-3-ylcarbamoyl)-2,2,5-trimethyl-oxazolidine-3-carbonyl]-but-3-enyl}-carbamic acid tert-butyl ester 、 {(S)-1-[(4S,5R)-4-((3S,5S)-5-Bromomethyl-2-oxo-tetrahydro-furan-3-ylcarbamoyl)-2,2,5-trimethyl-oxazolidine-3-carbonyl]-but-3-enyl}-carbamic acid tert-butyl ester