Convergent total syntheses of fluvibactin and vibriobactin using molybdenum(vi) oxide-catalyzed dehydrative cyclization as a key step
作者:Akira Sakakura、Shuhei Umemura、Kazuaki Ishihara
DOI:10.1039/b805880f
日期:——
Efficient total syntheses of fluvibactin and vibriobactin have been achieved via molybdenum(VI) oxide-catalyzed dehydrative cyclization, Sb(OEt)(3)-catalyzed ester-amide transformation, and WSCI and HOAt-promoted dehydrative amide formation.
available molybdenum(VI) oxides such as (NH4)2MoO4, (NH4)6Mo7O24·4H2O, MoO2(acac)2, and MoO2(TMHD)2 are highly effective dehydrative cyclization catalysts for the synthesis of a variety of oxazolines. The reaction proceeds with a complete retention of configuration at the β-position. For the dehydrative cyclization of cysteine derivatives, bis(2-ethyl-8-quinolinolato)dioxomolybdenum(VI) shows remarkable
(NH 4)2 MoO 4,(NH 4)6 Mo 7 O 24 ·4H 2 O,MoO 2(acac)2和MoO 2(TMHD)2等市售氧化钼(VI)是高效的脱水环化反应用于合成各种恶唑啉的催化剂。反应进行时将构型完全保留在β位。对于半胱氨酸衍生物的脱水环化反应,双(2-乙基-8-喹啉酮基)二氧钼(VI)显示出显着的催化活性,并在没有明显损失立体化学完整性的情况下提供了噻唑啉。C 2-外甲硫氨酸的位置。
Total Syntheses and Evaluation of the Siderophore Functions of Fimsbactin B and Its Analogs
作者:Hwisoo Ree、Jimin Kim、Woon Young Song、Jae Eun Lee、Hak Joong Kim
DOI:10.1002/bkcs.10265
日期:2015.5
Total Synthesis of Acinetobactin
作者:Jimin Kim、Jae Eun Lee、Hwisoo Ree、Hak Joong Kim
DOI:10.1002/bkcs.10102
日期:2015.1
Total Syntheses of Fimsbactin A and B and Their Stereoisomers to Probe the Stereoselectivity of the Fimsbactin Uptake Machinery in <i>Acinetobacter baumannii</i>
作者:Soojeung Kim、Haeun Lee、Woon Young Song、Hak Joong Kim
DOI:10.1021/acs.orglett.0c00790
日期:2020.4.3
The stereoselective synthesis of fimsbactin A, a siderophore of the human pathogen Acinetobacter baumannii, was established. Based on this synthetic route, various fimsbactin stereoisomeric analogues were generated and tested for their iron delivery activity for A. baumannii. This investigation revealed that the fimsbactin uptake machinery in this bacterium was indeed highly stereoselective in substrate recognition.