甲醇 、
bistheonellide B 在
sodium methylate 作用下,
生成 (E)-5-Hydroxy-2-methyl-6-{6-[4,6,8,10-tetrahydroxy-2-methoxy-13-(4-methoxy-6-methyl-tetrahydro-pyran-2-yl)-7,9,11-trimethyl-tridecyl]-5,6-dihydro-2H-pyran-2-yl}-hex-2-enoic acid methyl ester 、 (E)-5-Hydroxy-2-methyl-6-{6-[4,6,8,10-tetrahydroxy-2-methoxy-13-(4-methoxy-6-methyl-tetrahydro-pyran-2-yl)-3,7,9,11-tetramethyl-tridecyl]-5,6-dihydro-2H-pyran-2-yl}-hex-2-enoic acid methyl ester