THE SYNTHESIS OF DEHYDROLUPANINES AND THE STEREOCHEMISTRY OF THE C<sub>15</sub> LUPIN ALKALOIDS
作者:Léo Marion、Nelson J. Leonard
DOI:10.1139/v51-042
日期:1951.5.1
Two new dehydrolupanines, C15H22N2O, have been prepared: (1) by the mercuricacetate dehydrogenation of the alkaloid d-lupanine, and (2) by the N-bromosuccinimide dehydrogenation of d-lupanine. The conversion of d-lupanine to its diastereoisonieric alkaloid d-α-isolupanine has been effected by mercuricacetate dehydrogenation followed by catalytic hydrogenation. On the basis of evidence and knowledge
d-α-Isolupanin, ein Nebenalkaloid der blauen Lupine
作者:K. Winterfeld、H. Pies
DOI:10.1002/ardp.19572901106
日期:——
Markiewicz, Maria; Wiewiorkowski, Maciej, Bulletin de l'Academie Polonaise des Sciences, Serie des Sciences Chimiques, 1981, vol. 29, # 9-10, p. 399 - 406
作者:Markiewicz, Maria、Wiewiorkowski, Maciej
DOI:——
日期:——
Geometry of some α-isosparteine derivatives
作者:Tadeusz Brukwicki、Waleria Wysocka
DOI:10.1016/j.molstruc.2005.10.014
日期:2006.3
C-13 and H-1 NMR spectra of five compounds with the a-isosparteine skeleton: a-isosparteine (2), 2-oxo-alpha-isosparteine (a-isolupanine, 4), 2,13-dioxo-alpha-isosparteinc (5), 2-tiono-alpha-isospartcine (6), and 13-oxo-2-tiono-alpha-isosparteine (7) were compared. Precise determination of the effects of ketone, lactam and thiolactam groups allowed identification of differences in the geometry of the compounds compared. Ring A of the two lactams investigated, 4 and 5, has the same or very similar geometry but is different than that in 2-oxosparteine (lupanine) while in thiolactams 6 and 7 it has the same (or very close) geometry as in 2-thionosparteine. Ketone group in position 13 in 5 and 7 causes a flattening of ring D in a similar way, and different to that in 2,13-dioxosparteine (13-oxolupanine). (c) 2005 Elsevier B.V. All rights reserved.
Formation of Quaternary Salts of Sterically Hindered Bis-Quinolizidine Monolactams under High Pressure