Efficient syntheses of<sup>13</sup>C-labelled erythromycin biosynthetic intermediates. 2: (2<i>S</i>,3<i>S</i>,4<i>S</i>,5<i>R</i>,6<i>R</i>,7<i>R</i>)-3,6,7-trihydroxy-2,4,6-trimethyl[1-<sup>13</sup>C]nonan-5-olide and<i>S</i>-2-acetylaminoethyl (2<i>R</i>,3<i>S</i>,4<i>S</i>,5<i>R</i>,6<i>S</i>,7<i>R</i>)-3,5,6,7-tetrahydroxy-2,4,6-trimethyl[1-<sup>13</sup>C]nonanethioate
作者:Katsumi Iida、Masahiro Kajiwara、Mineo Fukui、Tadashi Nakata、Takeshi Oishi
DOI:10.1002/jlcr.1506
日期:2008.4
The 13C-labelled putative erythromycin biosynthetic intermediates, ((2S,3S,4S,5R,6R,7R)-3,6,7-trihydroxy-2,4,6-trimethyl[1-13C]nonan-5-olide and S-2-acetylaminoethyl (2R,3S,4S,5R,6S,7R)-3,5,6,7-tetrahydroxy-2,4,6-trimethyl[1-13C]nonanethioate), which would be useful for the investigation of the chain elongation mechanism in erythromycin biosynthesis, were efficiently synthesized via aldol condensation of aldehyde derived from (2S,3R,4R,5R)-tert-butyldimethylsilyloxy-5-3,4-O-isopropylidene-2,4-dimethylheptanol, which was obtained in our previous work on erythromycin A synthesis, and sodium [1-13C]propionate (after conversion to ester). Copyright © 2008 John Wiley & Sons, Ltd.
13C标记的假定红霉素生物合成中间体((2S,3S,4S,5R,6R,7R)-3,6,7-三羟基-2,4,6-三甲基[1-13C]壬烷-5-内酯和S-2-乙酰氨基乙基(2R,3S,4S,5R,6S,7R)-3,5,6,7-四羟基-2,4,6-三甲基[1-13C]壬烷硫代酸酯)可通过醛缩合有效合成,该醛来自(2S,3R,4R,5R)-叔丁基二甲基硅氧基-5-3,4-O-异亚丙基-2,4-二甲基庚醇,该化合物是在我们之前关于红霉素A合成的研究中获得的,以及[1-13C]丙酸钠(转化为酯后)。版权 © 2008 John Wiley & Sons, Ltd.