在
palladium on activated charcoal
氢气 作用下,
以99%的产率得到(1S,2R,5R,6S,7R,8R,11R,13R,17S,18R)-18-[(2S,3R,4S,6R)-4-(dimethylamino)-3-hydroxy-6-methyloxan-2-yl]oxy-5-ethyl-6,7-dihydroxy-2,6,8,9,11,13,17-heptamethylspiro[4,14,16-trioxa-9-azabicyclo[11.3.2]octadecane-15,4'-piperidine]-3-one