Enantioselective Synthesis and Stereochemical Revision of Communiols A–C, Antibacterial 2,4-Disubstituted Tetrahydrofurans from the Coprophilous Fungus<i>Podospora communis</i>
作者:Masaru ENOMOTO、Shigefumi KUWAHARA
DOI:10.1271/bbb.80173
日期:2008.7.23
enantioselective synthesis of the originally proposed structure of communiol C, an antibacterial 2,4-disubstituted tetrahydrofuran natural product from the coprophilous fungus Podospora communis, and its epimer via the Sharpless asymmetric dihydroxylation as the source of chirality led us to propose that the genuine stereochemistry of communiol C should be 3R, 5R, and 6S. The synthesis of the (3R,5R,6S)-isomer
对映体的最初提议的结构Commununiol C的合成,它是由共亲真菌Podospora communis产生的抗菌性2,4-二取代的四氢呋喃天然产物,以及它的差向异构体,通过Sharpless不对称二羟基化作用作为手性来源,因此我们提出了真正的立体化学通讯C的C应为3R,5R和6S。commonuniol C的(3R,5R,6S)异构体的合成及其在各个方面与天然commonuniol C的良好相符性,使我们得以确认新提出的commonuniol C的(3R,5R,6S)-立体化学。同一微生物来源的与结构相关的天然产物(Communolol A和B)也通过其总合成进行了修订。