描述:
(O-isopropylidene-1',2'-O-methyl-3'-α-D-xylo-tetrofurannose-1',4'-yl-4')9-tetradesoxy-6,7,8,9-di-O-isopropylidene-<1,2:3,4>-α-D-galacto-nonodiyno-6,8-pyrannose-1,5 以95%的产率得到(3aR,5S,5aR,8aS,8bR)-5-[5-((3aR,5S,6R,6aR)-6-Methoxy-2,2-dimethyl-tetrahydro-furo[2,3-d][1,3]dioxol-5-yl)-thiophen-2-yl]-2,2,7,7-tetramethyl-tetrahydro-bis[1,3]dioxolo[4,5-b;4',5'-d]pyran