• Archives of Pharmacal Research
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• v.10 no.2
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• pp.121-131
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• 1987

Four triterpenoids were isolated from the roots of Ilex pubescens : two new triterpenoids named pubescenolic acid (I) and pubescenic acid (II), and two known triterpenoids ilexolic acid (III) and oleanolic acid (IV). Chemical and spectroscopic studies have established I and II as 20-epipomolic acid and 24-carboxypomolic acid, repectively.

• Archives of Pharmacal Research
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• v.10 no.2
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• pp.132-141
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• 1987

New triterpenoid saponins, ilexosides A, D, E, J, K and O have been isolated form the root of Ilex pubescens. Chemical and spectroscopic studies have established their structures as shown in formulae 1, 2, 8, 11, 3, 4 and 5.

• Korean Journal of Pharmacognosy
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• v.33 no.4 s.131
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• pp.301-304
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• 2002

Two triterpenoid saponine were isolated from the stems of Acer ginnala Maxim. The structures of triterpenoid saponins were established as ilexoside O, $3-O-{\alpha}-L- rhamnopyranosyl(1{\rightarrow}2)-{\beta}-D-glucopyranosyl(1{\rightarrow}2)-{\beta}-D-xylopyranosyl-pubescenolic$ acid 28-{\beta}-D-glucopyranosyl$ ester(1) and ilexoside K, $3-O-{\beta}-D-glucopyranosyl(1{\rightarrow}2)-{\beta}-D-xylopyranosyl-pubes-cenolic$ acid $28-{\beta}-D-glucopyranosyl$ ester(2). Their chemical structures have been elucidated on the basis of spectral methods.