see text] The first asymmetric totalsynthesis of a structurally novel cis-cyclopent[c]isoxazolidine alkaloid, (-)-pyrinodemin A (3), which exhibits potent cytotoxicity, has been accomplished through a highly diastereoselective intramolecular nitrone-olefin cycloaddition reaction as the key step. Thus, it has been found that the hitherto unknown absoluteconfiguration of pyrinodemin A is as indicated
Investigation into the absolute stereochemistry of the marine sponge alkaloid pyrinodemin A
作者:Stuart P. Romeril、Victor Lee、Jack E. Baldwin、Timothy D.W. Claridge、Barbara Odell
DOI:10.1016/j.tetlet.2003.08.097
日期:2003.10
The absolute configuration of the marine sponge alkaloid pyrinodemin A is established by organic synthesis. (C) 2003 Elsevier Ltd. All rights reserved.
Synthesis of a possible structure of pyrinodemin A
作者:Stuart P. Romeril、Victor Lee、Timothy D.W. Claridge、Jack E. Baldwin
DOI:10.1016/s0040-4039(01)02117-7
日期:2002.1
An alternative possible structure of pyrinodemin A is synthesised. The C-13 NMR or the synthetic product 3 is in better agreement with the literature data. (C) 2002 Elsevier Science Ltd. All rights reserved.
On the synthesis of pyrinodemin A. Part 1: The location of the olefin
作者:Stuart P. Romeril、Victor Lee、Jack E. Baldwin、Timothy D.W. Claridge
DOI:10.1016/j.tet.2004.11.051
日期:2005.1
The elucidation of the structure of the cytotoxic marine sponge alkaloid pyrinodemin A by synthesis is described. Based on the C-13 NMR spectra of three double bond positional isomers and the natural product, it is concluded the C14'-C15' isomer best represents the true structure of pyrinodemin A. In addition, the structural assignment of pyrinodemin C is evaluated. (C) 2004 Elsevier Ltd. All rights reserved.