Harry H. S. Fong

TL;DR: LC-MS-MS analysis of ginseng products for the presence and ratio of gINSenoside Rf and 24(R)-pseudoginsenoside F11 may be used for the unambiguous identification of Asian and North American ginsenengs.

TL;DR: Two new compounds, an ent-isopimarane-type diterpene, 3alpha,12alpha-dihydroxy-ent-8(14),15- isopimaradien-18-al (1), and a dihydrobenzo[b]furan neolignan, (-)-trans-9-acetyl-4,9'-di-O-methyl-3'-de-O

TL;DR: Estrogenicity-directed fractionation of a methanol extract of the strobiles of Humulus lupulus that had been extracted previously with supercritical CO(2), known as "spent hops", led to the isolation and identification of 22 compounds including 12 prenylated chalcones and four previously unreported constituents of hops.

TL;DR: Of the 12 compounds isolated from the roots of Bursera tonkinensis Guillaum, only 4'-demethyldesoxypodophyllotoxin exhibited significant cytotoxic activities against KB, Col2 and LNCaP cell lines.

TL;DR: Six constituents of the novel biaurone 1 were isolated from EtOAc-soluble partitions of two separate collections of the whole plants of Cotinus coggygria and found to be potent antioxidants in a 1,1-diphenyl-2-picrylhydrazyl free-radical scavenging assay.