(2R,3R,4'R,4a'R,6a'S,6b'R,8a'S,12a'S,12b'S,14a'S)-3-(benzyloxy)-4',5,5,12a'-tetramethylhexadecahydro-1'H,3H,10'H-spiro[furan-2,3'-naphtho[2',1':4,5]indeno[7a,1-c]pyran]-10',14'(9'H)-dione 在
palladium on activated charcoal
氢气 作用下,
以
乙醇 、
溶剂黄146 为溶剂,
反应 16.0h,
以86%的产率得到(1R,2S,3'R,5R,6S,7R,10S,13S,14S,19S)-3'-hydroxy-5',5',6,14-tetramethylspiro[8-oxapentacyclo[11.8.0.02,10.05,10.014,19]henicosane-7,2'-oxolane]-11,17-dione