Full Text Journal Articles by
Author Hosup Yeo

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Lignans of Rosa multiflora roots.

Hosup Yeo, Young-Won Chin, Shin-Young Park, Jinwoong Kim,

Five known lignans, (+)-pinoresinol (1), (+)-8-hydroxypinoresinol (2), (-)-dehydrodiconiferyl alcohol (3), (+)-trans-dehydrodiconiferyl alcohol (4), and (-)-olivil (5), were isolated from the roots of Rosa multiflora for the first time. Their structures were determined using spectroscopic data. ... Read more >>

Arch. Pharm. Res. (Archives of pharmacal research)
[2004, 27(3):287-290]

Cited: 17 times

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Increased anti-P-glycoprotein activity of baicalein by alkylation on the A ring.

Yashang Lee, Hosup Yeo, Shwu-Huey Liu, Zaoli Jiang, Ruben M Savizky, David J Austin, Yung-chi Cheng,

The aqueous extract of Scutellariae baicalensis Georgi has inhibitory activity against P-gp 170, a multiple drug resistant gene product. Baicalein, one of the major flavones, was found to be responsible for this activity. The hydroxyl groups of the A ring of baicalein were systematically alkylated in order to assess the ... Read more >>

J. Med. Chem. (Journal of medicinal chemistry)
[2004, 47(22):5555-5566]

Cited: 17 times

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New pregnane glycosides from Cynanchum ascyrifolium.

Hosup Yeo, Young Hae Choi, Jinwoong Kim,

Two new pregnane glycosides, cynascyrosides D and E, were isolated from the roots of Cynanchum ascyrifolium. The structures of these compounds were determined on the basis of spectroscopic and chemical evidence as cynajapogenin A 3-O-alpha-L-cymaropyranosyl-(1-->4)-beta-D-digitoxopyranosyl-(1-->4)-beta-L-cymaropyranoside and cynajapogenin A 3-O-beta-D-glucopyranosyl-(1-->4)-alpha-L-diginopyranosyl-(1-->4)-beta-L-cymaropyranosyl-(1-->4)-beta-D-digitoxopyranoside. ... Read more >>

Chem. Pharm. Bull. (Chemical & pharmaceutical bulletin)
[2002, 50(6):847-849]

Cited: 1 time

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