(4S,5R,6S)-4-(5,6-Diacetoxy-2-acetyl-1,2,3,4-tetrahydro-isoquinolin-3-ylmethyl)-6-((2R,3S,4R,5S,6S)-3,4,5-triacetoxy-6-acetoxymethyl-tetrahydro-pyran-2-yloxy)-5-vinyl-5,6-dihydro-4H-pyran-3-carboxylic acid methyl ester 在
triethyloxonium fluoroborate 作用下,
生成
Acetic acid (10S,11R,11aS)-2-acetoxy-7-oxo-10-((2R,3S,4R,5S,6S)-3,4,5-triacetoxy-6-acetoxymethyl-tetrahydro-pyran-2-yloxy)-11-vinyl-5,10,11,11a,12,12a-hexahydro-6H,7H-9-oxa-6a-aza-benzo[a]anthracen-1-yl ester