dimethyl 2-oxo-3-(1-adamantyl)propylphosphonate 、 Biphenyl-4-carboxylic acid (3aR,4R,5R,6aR)-4-formyl-6a-hydroxy-2-oxo-hexahydro-cyclopenta[b]furan-5-yl ester 生成 Biphenyl-4-carboxylic acid (3aR,4S,5R,6aR)-4-((E)-4-adamantan-1-yl-2-bromo-3-oxo-but-1-enyl)-6a-hydroxy-2-oxo-hexahydro-cyclopenta[b]furan-5-yl ester