(4bS,8R,8aS,9aR,100S,13aR,13bR)-1-benzyloxy-10-tert-butyl-7-cyclopropylmethyl-5,6,7,8,9,9a,10,13b-octahydro-10-methyl-8a,13a-ethano-4,8-methanobenzofuro[3,2-e][1,3]dioxino[4,5-g]isoquinoline 、 (4bS,8R,8aR,9aR,10S,13aR,13bR)-7-allyl-10-tert-butyl-5,6,7,8,9,9a,10,13b-octahydro-10-methyl-8a,13a-ethano-4,8-methanobenzofuro[3,2-e][1,3]dioxino[4,5-g]isoquinolin-1-ol 在
(4bS,8R,8aR,9aR,10S,13aR,13bR)-7-allyl-1-benzyloxy-10-tert-butyl-5,6,7,8,9,9a,10,13b-octahydro-10-methyl-8a,13a-ethano-4,8-methanobenzofuro[3,2-e][1,3]dioxino[4,5-g]isoquinoline 作用下,
以After column chromatography, 590 mg (98% yield) of compound 19 was isolated in a purity of 97.7% as a white solid的产率得到(4bS,8R,8aR,9aR,10S,13aR,13bR)-7-allyl-1-benzyloxy-10-tert-butyl-5,6,7,8,9,9a,10,13b-octahydro-10-methyl-8a,13a-ethano-4,8-methanobenzofuro[3,2-e][1,3]dioxino[4,5-g]isoquinoline