(4S,5'R,6aR,6bS,8aS,8bR,9S,10R,11aS,12aS,12bS)-5',6a,8a,9-tetramethyl-1,3,3',4,4',5,5',6,6a,6b,6',7,8,8a,8b,9,11a,12,12a,12b-icosahydrospiro[naphtho[2',1':4,5]indeno[2,1-b]furan-10,2'-pyran]-4-yl sulfamate 在
碘苯二乙酸 、 [(2,2':6',2'':6'',2''':6''',2''''-quinquepyridine)bis(acetonitrile)iron(II)] perchlorate 、
magnesium oxide 作用下,
以
乙腈 为溶剂,
反应 12.0h,
以78%的产率得到(2bR,5aS,5'R,7aR,7bS,9aS,9bR,10S,11R,12aS,13aS,13bS)-5',7a,9a,10-tetramethyl-2b,3,3',4',5a,5',6,6',7,7a,7b,8,9,9a,9b,10,12a,13,13a,13b-icosahydro-1H-spiro[furo[2'',3'':4',5']cyclopenta[1',2':7,8]phenanthro[1,2-d][1,2,3]oxathiazole-11,2'-pyran] 4,4-dioxide