L. Mitscher, S. R. Gollapudi, D. Gerlach
1988
Citations
0
Influential Citations
46
Citations
Journal
Phytochemistry
Abstract
Abstract Bioassay-directed fractionation of ethanolic extracts of the stern bark of Erythrina crista-galli resulted in the isolation of a new pterocarpan, erycristin, and two previously known pterocarpans, sandwicensin and erythrabyssin-II. The structure of erycristin was determined by spectroscopic examination and by chemical transformation of sandwicensin. The absolute stereochemistry of erycristin was established by circular dichroism measurements. Erythrabyssin-II diacetate was converted to erycristagallin diacetate, supporting the previous proposed structure of erycristagallin.