4-Benzyloxy-6-methyl-isobenzofuran 、
6-((2R,4R,5R,6R)-4,5-Bis-benzyloxy-6-methyl-tetrahydro-pyran-2-yl)-2-bromo-5-methoxy-[1,4]naphthoquinone 在
N-氯代丁二酰亚胺 、 sodium hydride 作用下,
以
四氢呋喃 为溶剂,
生成 5-methoxy-15-methyl-6-[(2R,4R,5R,6R)-6-methyl-4,5-bis(phenylmethoxy)oxan-2-yl]-17-phenylmethoxy-19-oxapentacyclo[10.6.1.02,11.04,9.013,18]nonadeca-2(11),4(9),5,7,13(18),14,16-heptaene-3,10-dione 、 5-methoxy-16-methyl-6-[(2R,4R,5R,6R)-6-methyl-4,5-bis(phenylmethoxy)oxan-2-yl]-14-phenylmethoxy-19-oxapentacyclo[10.6.1.02,11.04,9.013,18]nonadeca-2(11),4(9),5,7,13(18),14,16-heptaene-3,10-dione