Acetic acid (2S,3R,4S,5R,6R)-4,5-diacetoxy-6-acetoxymethyl-2-(3-amino-2-formyl-phenoxy)-tetrahydro-pyran-3-yl ester 在
potassium carbonate 、
溶剂黄146 作用下,
以
甲醇 为溶剂,
反应 13.5h,
生成 (19S)-19-ethyl-19-hydroxy-8-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-17-oxa-3,13-diazapentacyclo[11.8.0.02,11.04,9.015,20]henicosa-1(21),2,4(9),5,7,10,15(20)-heptaene-14,18-dione