(4aR,5R,8aS)-2,8a-Dimethyl-5-phenylsulfanyl-4a,5,8,8a-tetrahydro-[1,4]naphthoquinone 在
(3-tetrahydropyran-2-yloxy-prop-1-ynyl)-lithium 作用下,
以
四氢呋喃 为溶剂,
反应 2.5h,
以79%的产率得到(4S,4aR,8S,8aS)-4-Hydroxy-3,4a-dimethyl-8-phenylsulfanyl-4-[3-(tetrahydro-pyran-2-yloxy)-prop-1-ynyl]-4a,5,8,8a-tetrahydro-4H-naphthalen-1-one