6',3''-di-N-acetyl-5,2''-di-O-acetyl-4'',6''-O-cyclohexylidene-3'-deoxy-3'-fluoro-1,3,6',3''-tetra-N-tosylkanamycin A 在
吡啶 、
氯化亚砜 作用下,
以
二氯甲烷 为溶剂,
以92%的产率得到6',3''-di-N-acetyl-5,2''-di-O-acetyl-4'-chloro-4'',6''-O-cyclohexylidene-3',4'-dideoxy-4'-epi-3'-fluoro-1,3,6',3''-tetra-N-tosylkanamycin A