Five New Isoprenoid-substituted Flavonoids, Kanzonols M - P and R, from Two Glycyrrhiza Species

Abstract

Three new formylated isoflavan derivatives, kanzonols M, N, and O, and a new prenylated pterocarpan derivative, kanzonol P, were isolated from Glycyrrhiza uralensis along with kanzonol Q (dihydroxanthoxyletin). A new prenylated isoflavan derivative, kanzonol R, was isolated from G. glabra. These structures were elucidated on the basis of spectrometric evidence