Straightforward Access to Enantioenriched 2-Allylpiperidine: Application to the Synthesis of Alkaloids
作者:Irene Bosque、José C. González-Gómez、Francisco Foubelo、Miguel Yus
DOI:10.1021/jo202211u
日期:2012.1.6
requires only two synthetic operations with one-column chromatography and is readily scaled up. The versatility of these chiral building blocks was exemplified by the total or formal synthesis of some natural and unnatural alkaloids.
Total Synthesis of (−)-Senepodine G and (−)-Cermizine C
作者:Barry B. Snider、James F. Grabowski
DOI:10.1021/jo062067w
日期:2007.2.1
An efficient, stereospecific synthesis of the alkaloids senepodine G (2 and cermizine C (1) has been completed using the BF3 center dot Et2O-promoted stereospecific addition of Me2CuLi to alpha,beta-unsaturated lactam 6 to provide lactam 3 the addition of MeMgBr followed by HCl to convert 3 to senepodine G (2) (six steps, 40% overall yield), and the stereospecific NaBH4 reduction of 2 to give cermizine C (1) (seven steps, 40% overall yield).
Synthetic Transformations of Sulfur-Substituted 4-Quinolizidinones
作者:Shang-Shing P. Chou、Chao-Hsiang Kao
DOI:10.1002/jccs.201300250
日期:2013.7.26
Sulfur‐substituted 4‐quinolizidinones, previously prepared by aza‐Diels‐Alderreactions and ring‐closing metathesis, are now subjected to further synthetic transformations. Formal synthesis of cermizine C and 5‐epi‐cermizine C, and some other useful reactions have been achieved.