(2R,2'S,3S,4'S,4aR,5'S,7S,7aR)-3,4a,5'-trimethyl-2-[(2R,4S)-4-methylhex-5-en-2-yl]-4'-(phenylmethoxymethyl)-2'-prop-2-enylspiro[3,7a-dihydro-2H-furo[3,4-b]pyran-7,1'-cyclohexane]-4,5-dione 在
2,3-二氯-5,6-二氰基-1,4-苯醌 作用下,
以
二氯甲烷 、
水 为溶剂,
反应 24.0h,
以72%的产率得到(2R,2'S,3S,4'S,4aR,5'S,7S,7aR)-4'-(hydroxymethyl)-3,4a,5'-trimethyl-2-[(2R,4S)-4-methylhex-5-en-2-yl]-2'-prop-2-enylspiro[3,7a-dihydro-2H-furo[3,4-b]pyran-7,1'-cyclohexane]-4,5-dione