Taurospongin A, a Novel Acetylenic Fatty Acid Derivative Inhibiting DNA Polymerase β and HIV Reverse Transcriptase from Sponge Hippospongia sp.
摘要:
Taurospongin A (1), a novel acetylene-containing natural product consisting of a taurine and two fatty acid residues, has been isolated from the Okinawan marine sponge Hippospongia sp. and its structure elucidated by spectral data and chemical means. Taurospongin A (1) exhibited potent inhibitory activity against DNA polymerase beta and HIV reverse transcriptase. The absolute configurations of taurospongin A (1) were established to be 3R, 7S, and 9R by synthesis of the MTPA ester of a degradation product of 1.
Use of π-allyltricarbonyliron lactone complexes in the synthesis of taurospongin A: a potent inhibitor of DNA polymerase β and HIV reverse transcriptase
作者:Christopher J. Hollowood、Shigeo Yamanoi、Steven V. Ley
DOI:10.1039/b301676p
日期:——
The total synthesis of taurospongin A by two new approaches has been achieved where Ï-allyltricarbonyliron lactone complexes have been used to control highly stereoselective additions of the nucleophiles to a carbonyl unit located in the side chain of these complexes.
Twonew routes to the C(1−10) carboxylic acid core of taurospongin A are presented. In the first route, overall asymmetric hydration of a C(2)−C(3) alkene is achieved by Sharpless AD and selective deoxygenation at C(2); in the second route, the C(3) stereogeniccenter is set by Tietze asymmetric allylation. A short synthesis of the C(1′−25′) fatty acid combines with the product from the first route
Two new acetylenic fatty acid derivatives possessing a taurine amide residue, taurospongins B (1) and C (2), have been isolated from an Okinawan marine sponge of the family Spongiidae.
Enantioselective Total Synthesis of Taurospongin A
作者:Hélène Lebel、Eric N. Jacobsen
DOI:10.1021/jo9819741
日期:1998.12.1
Synthesis of taurospongin A: a potent inhibitor of DNA polymerase and HIV reverse transcriptase, using π-allyltricarbonyliron lactone complexes
作者:Christopher J. Hollowood、Steven V. Ley、Shigeo Yamanoi
DOI:10.1039/b204994p
日期:2002.7.11
The synthesis of taurospongin A has been achieved using, as a key step, a Ï-allyltricarbonyliron lactone complex to control a highly stereoselective addition of a methyl group to a carbonyl unit located in the side chain of the complex.