[3,4,5-trihydroxy-6-(2-oxo-2,6,7,7a-tetrahydro-benzofuran-6-yloxy)-tetrahydro-pyran-2-ylmethyl]-carbamic acid 9H-fluoren-9-ylmethyl ester 在
哌啶 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
生成 6-[2-(7-Amino-4-methyl-2-oxo-2H-chromen-3-yl)-acetylamino]-hexanoic acid [(2R,3R,4S,5R,6R)-3,4,5-trihydroxy-6-((6S,7aR)-2-oxo-2,6,7,7a-tetrahydro-benzofuran-6-yloxy)-tetrahydro-pyran-2-ylmethyl]-amide