(3aR,4S,6S,7R,7aR)-6-azido-7-hydroxy-4-methoxy-3-methyl-3a,4,5,6,7,7a-hexahydro-1,3-benzoxazol-2-one 、 Acetic acid (3R,6S)-6-{[((R)-1-phenyl-ethyl)-(2,2,2-trifluoro-acetyl)-amino]-methyl}-3-(2,2,2-trifluoro-acetylamino)-tetrahydro-pyran-2-yl ester 在
三氟化硼乙醚 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以80%的产率得到N-((2R,3R,6S)-2-((3aR,4S,6S,7R,7aR)-6-Azido-4-methoxy-3-methyl-2-oxo-octahydro-benzooxazol-7-yloxy)-6-{[((R)-1-phenyl-ethyl)-(2,2,2-trifluoro-acetyl)-amino]-methyl}-tetrahydro-pyran-3-yl)-2,2,2-trifluoro-acetamide