I. Tsypysheva, A. Lobov, A. Koval'skaya
Oct 31, 2013
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Journal
Tetrahedron-asymmetry
Abstract
Abstract The Diels–Alder adducts of the quinolizidine alkaloids N-methylcytisine, (−)-leontidine, and (−)-thermopsine with N-phenylmaleimide have been synthesized. The structures and absolute configurations of the new asymmetric centers of the products were determined by NMR spectroscopy experiments, QC-calculations, and X-ray data.