Title
New isoflavans from the root bark of Erythrina livingstoniana
Author
Kibrom Gebreheiwot Bedane, Ishmael B. Masesane, Runner R.T. Majinda
Year
2016
Journal
Phytochemistry Letters
Abstract
The phytochemical study on the root bark of Erythrina livingstoniana has led to the isolation of two new isoflavans namely 7-hydroxy-2′-methoxy-[6′′,6′′-dimethylpyrano (2′′,3′′:4′,5′)]isoflavan (1) and 7,2′-dihydroxy-[6′′,6′′-dimethyl pyrano (2′′,3′′:4′,5′)]isoflavan (2) together with eight known flavonoids (3-10). Their structures were elucidated on the basis of spectroscopic analyses (1D- and 2D-NMR and ESI-HRMS) and by comparison with literature data.
Instrument
J-810
Keywords
Circular dichroism, Absolute configuration, Agricultural and environmetal