1,2-Bis-(tert-butyl-dimethyl-silanyloxy)-4-tributylstannanyl-benzene 、
5-Methyl-1H-pyrrole-2-carboxylic acid (2S,3R,4S,5S,6S)-3-hydroxy-5-methoxy-6-methyl-2-[8-methyl-2-oxo-4-(toluene-4-sulfonyloxy)-2H-chromen-7-yloxy]-tetrahydro-pyran-4-yl ester 在
palladium diacetate
三苯基膦 作用下,
以
1,4-二氧六环 为溶剂,
以34%的产率得到5-Methyl-1H-pyrrole-2-carboxylic acid (2S,3R,4S,5S,6S)-2-{4-[3,4-bis-(tert-butyl-dimethyl-silanyloxy)-phenyl]-8-methyl-2-oxo-2H-chromen-7-yloxy}-3-hydroxy-5-methoxy-6-methyl-tetrahydro-pyran-4-yl ester