Beilstein J. Org. Chem.2016,12, 2523–2534, doi:10.3762/bjoc.12.247
and TDDFT–ECD calculations. The synthesized flavonoid alkaloids were further characterized by physicochemical and in vitro pharmacological studies.
Keywords: absolute configuration; Dracocephalum rupestre; dracocephinsA–B; ECD calculation; flavonoid alkaloids; HPLC–ECD; Introduction
Flavonoid
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Graphical Abstract
Figure 1:
Structures of (±)-naringenin, (±)-dracocephins A1–A4 and B1–B4 with the indication of the absolute ...