(R)-4-[(3R,4S,5R,6R)-3,4,5,7-Tetrakis-benzyloxy-2,6-dihydroxy-2-((2R,3R,4S,5R,6S)-3,4,5-tris-benzyloxy-6-methoxy-tetrahydro-pyran-2-ylethynyl)-heptyl]-[1,3]dioxolan-2-one 在
dicobalt octacarbonyl 、 ammonium cerium(IV) nitrate 、
三氟化硼乙醚 作用下,
生成
(R)-4-[(2R,3R,4S,5R,6R)-3,4,5-Tris-benzyloxy-6-benzyloxymethyl-2-((2R,3R,4S,5R,6S)-3,4,5-tris-benzyloxy-6-methoxy-tetrahydro-pyran-2-ylethynyl)-tetrahydro-pyran-2-ylmethyl]-[1,3]dioxolan-2-one 、 (R)-4-[(2S,3R,4S,5R,6R)-3,4,5-Tris-benzyloxy-6-benzyloxymethyl-2-((2R,3R,4S,5R,6S)-3,4,5-tris-benzyloxy-6-methoxy-tetrahydro-pyran-2-ylethynyl)-tetrahydro-pyran-2-ylmethyl]-[1,3]dioxolan-2-one