(S) 4-benzyl-3-[(E) 6-(1,3-dihydro-4-hydroxy-6-methoxy-7-methyl-3-oxoisobenzofuran-5-yl)-4-methyl-4-hexenoyl]-2-oxazolidinone 、
碘甲烷 在
sodium hexamethyldisilazane 作用下,
生成 (S)-4-Benzyl-3-[(E)-(S)-6-(4-hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydro-isobenzofuran-5-yl)-2,4-dimethyl-hex-4-enoyl]-oxazolidin-2-one 、 (S)-4-Benzyl-3-[(E)-(R)-6-(4-hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydro-isobenzofuran-5-yl)-2,4-dimethyl-hex-4-enoyl]-oxazolidin-2-one