作者:Hiroyuki Takayama、Keisuke Kato、Hiroyuki Akita
DOI:10.1002/ejoc.200500568
日期:2006.2
tetrahydro-2-furylidene acetate (–)-9, which was converted into the left-half aldehyde (+)-4. A Wittig reaction between (+)-4 and the phosphoranylide derived from the bithiazole-type phosphonium iodide 5 using lithium bis(trimethylsilyl)amide afforded (+)-(4R,5S)-melithiazol F (1), whose spectroscopic data were identical with those of the natural product 1. Moreover, the synthesis of (+)-(4R,5S)-melithiazol I
(2R,3S)-3-methylpenta-4-yne-1,2-diol (8) 的钯催化环化-甲氧基羰基化(8)衍生自 (2R,3S)-epoxybutanoate 7 然后甲基化得到四氢-2-furylidene乙酸酯 (-)-9,它被转化为左半醛 (+)-4。(+)-4 与衍生自联噻唑型碘化鏻 5 的磷酰酯之间使用双(三甲基甲硅烷基)酰胺锂进行 Wittig 反应,得到 (+)-(4R,5S)-甲基噻唑 F (1),其光谱数据相同与天然产物 1. 此外,(+)-(4R,5S)-melithiazol I (2) 的合成采用与 (+)-(4R,5S)-melithiazol 相同的合成策略(1)。通过使用纸盘测定法评估合成的甲噻唑 F (1) 和 I (2) 对植物致病真菌辣椒疫霉的抗真菌活性。