(4aR,5S,6S,6aR,9S,11aS,11bS,14R)-2-bromo-5,6,14-trihydroxy-4,4-dimethyl-8-methylenedecahydro-1H-6,11b-(epoxymethano)-6a,9-methanocyclohepta[a]naphthalene-1,7(8H)-dione 、
N-甲硫脲 以
乙醇 为溶剂,
反应 3.0h,
以52%的产率得到(5aR,6S,7S,7aR,10S,12aS,12bR,15R)-6,7,15-trihydroxy-5,5-dimethyl-2-(methylamino)-9-methylene-5,5a,6,7,10,11,12,12a-octahydro-4H-7,12b-(epoxymethano)-7a,10-methanocyclohepta[7,8]naphtho[1,2-d]thiazol-8(9H)-one