The first asymmetric total synthesis of (+)-perophoramidine has been achieved in 17 steps with ∼11% overall yield. The key step relies on an asymmetric biomimetic Diels-Alder reaction between the in situ-generated chiral diene T-24 and the substituted tryptamine 23 to assemble the core structure 27a in a highly efficient way. An acid-catalyzed thermodynamic equilibrium results in C N double-bond migration of the amidine moiety in 37, which guarantees a regioselective methylation on N1 at the end of the synthesis. The absolute configuration of (+)-perophoramidine was determined by X-ray crystallographic analysis of the chiral intermediate 32 and comparison of the rotation of synthetic (+)-perophoramidine with that of the natural product. © 2010 American Chemical Society.
CITATION STYLE
Wu, H., Xue, F., Xiao, X., & Qin, Y. (2010). Total synthesis of (+)-perophoramidine and determination of the absolute configuration. Journal of the American Chemical Society, 132(40), 14052–14054. https://doi.org/10.1021/ja1070043
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