First total synthesis of the highly potent antitumor lactones 8-chlorogoniodiol and parvistone A: Exploiting a bioinspired late-stage epoxide ring-opening
摘要:
The first protecting group-free total syntheses of the highly potent antitumor chlorinated styryllactone secondary metabolites 8-chlorogoniodiol, parvistone A, and one analogue 8-epi-parvistone A, have been accomplished from commercially available trans-cinnamaldehyde in five steps with high overall yields. The chlorine-bearing stereogenic center of these silent secondary metabolites was introduced via a bioinspired late-stage regioselective epoxide ring-opening strategy. Maruoka asymmetric allylation, acrylation, ring-closing metathesis and asymmetric epoxidation, greatly facilitate the synthesis of the key intermediates goniothalamin oxide and (6S,7S,8S)-isogoniothalamin oxide. (C) 2017 Elsevier Ltd. All rights reserved.
Asymmetric total synthesis and antiproliferative activity of goniothalamin oxide isomers
作者:Cilene Marquissolo、Ângelo de Fátima、Luciana K. Kohn、Ana Lúcia T.G. Ruiz、João Ernesto de Carvalho、Ronaldo A. Pilli
DOI:10.1016/j.bioorg.2008.12.001
日期:2009.4
Goniothalamin oxide (1) is a styryllactone which was isolated from bark and leaves of several Goniothalamus species. This natural product has some interesting biological properties such as larvicidal and tripanocidal activities. However, no studies on the antiproliferative profile of goniothalamin oxide (1) and its stereoisomers have been reported yet. Here, goniothalamin epoxide (1), isogoniothalamin
Goniothalamin oxide: An embryotoxic compound from (annonaceae)
作者:T.W Sam、Chew Sew-Yeu、Sabirin Matsjeh、E.K Gan、Dzulkifli Razak、Abdul L Mohamed
DOI:10.1016/s0040-4039(00)95462-5
日期:1987.1
SAM, T. W.;SEW-YEU, CHEW;MATSJEH, S.;GAN, E. K.;RAZAK, DZ.;MOHAMED, A. L., TETRAHEDRON LETT., 28,(1987) N 22, 2541-2544
作者:SAM, T. W.、SEW-YEU, CHEW、MATSJEH, S.、GAN, E. K.、RAZAK, DZ.、MOHAMED, A. L.
DOI:——
日期:——
First total synthesis of the highly potent antitumor lactones 8-chlorogoniodiol and parvistone A: Exploiting a bioinspired late-stage epoxide ring-opening
The first protecting group-free total syntheses of the highly potent antitumor chlorinated styryllactone secondary metabolites 8-chlorogoniodiol, parvistone A, and one analogue 8-epi-parvistone A, have been accomplished from commercially available trans-cinnamaldehyde in five steps with high overall yields. The chlorine-bearing stereogenic center of these silent secondary metabolites was introduced via a bioinspired late-stage regioselective epoxide ring-opening strategy. Maruoka asymmetric allylation, acrylation, ring-closing metathesis and asymmetric epoxidation, greatly facilitate the synthesis of the key intermediates goniothalamin oxide and (6S,7S,8S)-isogoniothalamin oxide. (C) 2017 Elsevier Ltd. All rights reserved.
Biosynthesis-Inspired Total Synthesis of Bioactive Styryllactones (+)-Goniodiol, (6<i>S</i>,7<i>S</i>,8<i>S</i>)-Goniodiol, (−)-Parvistone D, and (+)-Parvistone E
作者:Perla Ramesh、Tadikamalla P. Rao
DOI:10.1021/acs.jnatprod.6b00386
日期:2016.8.26
A protecting-group-free totalsynthesis of (+)-goniodiol (1), (6S,7S,8S)-goniodiol (2), (−)-parvistone D (4), and (+)-parvistone E (6) was efficiently achieved in five steps from commercially available trans-cinnamaldehyde with high overall yields (72–75%). The synthesis strategy was inspired from the proposed biosynthesis pathway of styryllactones. Key transformations of the strategy include a one-pot