2-{(2
R)-6-[(1Ξ,3
R)-4-(
tert-butyl-diphenyl-silanyloxy)-1,3-dimethyl-butyl]-3
c-methyl-3,4-dihydro-2
H-pyran-2
r-ylmethyl}-5-(methyl-trifluoroacetyl-amino)-benzooxazole-4-carboxylic acid methyl ester 在
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
生成
2-{(2R)-6-[(1Ξ,3R,4Ξ,Ξ)-6-(1-tert-butoxycarbonyl-pyrrol-2-yl)-4-hydroxy-1,3,5-trimethyl-6-oxo-hexyl]-3c-methyl-3,4-dihydro-2H-pyran-2r-ylmethyl}-5-methylamino-benzooxazole-4-carboxylic acid methyl ester