• Korean Journal of Weed Science
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• v.8 no.2
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• pp.133-140
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• 1988

One hundred and one noxious weeds on cultivated land of Taiwan were investigated for the occurrence of "Kranz" leaf anatomy and activities of PEP carboxylase and $C_4$ acid decarboxylating enzymes : NADP-malic enzyme, NAD-malic enzyme, PEP carboxykinase. Based on the leaf anatomy and a/b chlorophyll ratio, twenty-seven species exhibit "Kranz" type leaf anatomy, and seventy-four species were found without it. Among the species investigated, Digitaria radicosa (Presl) Miq., Leptochloa chinensis (L.) Nees, and Sporobolus fertilis (Steud.) W. D. Clayton in the Gramineae were first recorded as $C_4$ plants. Twenty-sven species of "Kranz" type leaf anatomy, include those of monocotyledon ; sixteen species in Gramineae, six species in Cyperaceae. Those of dicotyledon ; two species each in Euphorbiaceae and Amaranthaceae and one species in Portulacaceae. The subtype of fourteen previously uninvestigated species among twenty-seven species were further determined. The properties of the three decarboxylating enzyme from representative species were also characterized.

• Korean Journal of Pharmacognosy
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• v.27 no.1
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• pp.1-5
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• 1996

Twelve compounds were isolated from stems of Securinega suffruticosa. On the basis of chemical and spectroscopic evidence, they were identified as gallic acid, corilagin, tercatain, geraniin, bergenin, norbergenin, 4-O-galloylnorberg-enin, 11-O-galloylnorbergenin, (+)-catechin, gallocatechin, isoquercitrin and rutin.

• Archives of Pharmacal Research
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• v.27 no.11
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• pp.1109-1113
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• 2004

A new triterpene (1) and six known pentacyclic terpenoids (2-7) were isolated from the methanol extract of the dried leaves from Mallotus apelta. Based on the spectral and chemical evidence, their structures were determined to be 3$\alpha$-hydroxyhop-22(29)-ene (1), hennadiol (2), friedelin (3), friedelanol (4), epifriedelanol (5), taraxerone (6), and epitaraxerol (7).

• Korean Journal of Pharmacognosy
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• v.27 no.2
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• pp.142-145
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• 1996

We have previously reported the isolation of seven hydrolyzable tannins and nine flavonoids from Euphorbia pekinensis Ruprecht. Further investigation about the same plant has led to the isolation of kaempferol, quercetin, kaempferol $3-O-(2'-O-galloyl-{\beta}-_D-glucoside)$, quercetin 3-O-(2'-O-galloylrutinoside), ellagic acid and acetonyl geraniin. These compounds were isolated from this plant for the first time.

• Natural Product Sciences
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• v.12 no.3
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• pp.125-128
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• 2006

A chemical examination of the stems of Sapium japonicum PAX et $H_{OFFM}$ (Euphorbiaceae) has led to the isolation of seven phenolic compounds. On the basis of UV, IR, MS, and NMR spectral data and the chemical reaction, the structures of these compounds were identified as gallic acid (1), ellagic acid (2), 3,3'-di-O-methylellagic acid (3), $4-O-({\beta}-D-xylopyranosyl)-3,3'-di-O-methylellagic$ acid (4), $4-O-({\alpha}-D-arabinofuranosyl)-3,3'-di-O-methylellagic$ acid (5), isoquercitrin (6), and geraniin (7).

• Korean Journal of Plant Resources
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• v.6 no.1
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• pp.45-51
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• 1993

Many plants collected at Japan, China, Korea, Imdonesia and South America were applied to antitumor and / or cytotoxic screening tests against Sarcoma 180 ascites in mice and / or V-79, KB, P388 cultured cells. On the course of these screening tests, alcoholic extracts of Forsythia viridissima (Oleaceae), Eurycoma longifolia(Simaroubaceae), Rubia cordifolia and R. akane(Rubiaceae), Cissampelos pareira and Abuta concolor (Menispermaceae), Nardostachys chinensis (Valerianacese), Mansoa alliaceae (Bignoniaceae), Casearia sylvestris (Flacourtiacear), Maytenus ilicifolia (Celastraceae), Hedychium coronarium (Zingiberaceae), Croton palanostigma(Euphorbiaceae), Cocculus trilobus(Menispermaceae), Ginkgo biloba(Ginkgoaceae), Alpinia galanga and Cucculus zanthorrhiza(Zingiberaceae), Evodia rutaecarpa(Rutaceae), and Periploca sepium(Asclepiadaceae) showed significant activity and their active principles were clarified. In this paper, a few antitumor substances in above plants are introduced.

• Korean Journal of Pharmacognosy
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• v.25 no.2
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• pp.105-112
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• 1994

A chemical examination of the aqueous acetone extract of the leaves of Securinega suffruticosa has led to the isolation of nine phenolic compounds. On the basis of chemical and spectroscopic evidences, the structures of these compounds were established to be gallic acid(1), corilagin(2), helioscopinin B(3), geraniin(4), bergenin (5), norbergenin(6), 11-O-galloyl norbergenin(7), gallocatechin(8) and rutin(9).

• Korean Journal of Pharmacognosy
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• v.24 no.1
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• pp.20-25
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• 1993

Three phenolcarboxylic acids, two flavonoids and four hydrolysable tannins were isolated from the whole plant of Acalypha australis. On the basis of chemical and spectroscopic evidence, the structures of these compounds were established as gallic acid, protocatechuic acid, caffeic acid, rutin, isoquercitrin, corilagin, furosin and geraniin.

• Korean Journal of Plant Taxonomy
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• v.51 no.3
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• pp.305-318
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• 2021

We report 14 species of flowering plants as new additions to the flora of Laos. These are Illex viridis (Aquifoliaceae), Capparis erycibe (Capparaceae), Euphorbia bokorensis (Euphorbiaceae), Exacum darae (Gentianaceae), Aeschynanthus cambodiensis (Gesneriaceae), Tetraphyllum roseum (Gesneriaceae), Utricularia gibba (Lentibulariaceae), Macrosolen brandisianus (Loranthaceae), Decaschistia siamensis (Malvaceae), Nyssa yunnanensis (Nyssaceae), Adenia penangiana var. penangiana (Passifloraceae), Pentaphylax euryoides (Pentaphylacaceae), Wikstroemia bokorensis (Thymelaeaceae), and Debregeasia wallichiana (Urticaceae). We discovered the species during a botanical survey of the Phou Khao Khouay National Biodiversity Conservation Area (PKKNBCA) of Lao PDR in 2015-2019. In addition, nine rarely collected flowering plant species in Laos are newly reported for the PKKNBCA.

• Proceedings of the PSK Conference
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• 2003.10b
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• pp.191.2-191.1
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• 2003

Phyllanthus ussuriensis Rupr. et Maxim. (Euphorbiaceae) has long been used in folk medicine to treat kidney and urinary bladder disturbances, intestinal infections, diabetes, and hepatitis. Reported chemical constituents of this species are one flavonoid (rutin), two gallotannins (gallic acid, methyl gallate) and two ellagitannins.An investigation of the n-BuOH fraction of P. ussuriensis led to the isolation of two new megastigmane glycosides, 10-hydroxy-4,7-megastigmadiene-3-one-9-O-b-D-glucopyranoside (1), 10- hydroxy-4,6-megastigmadiene-3-one-9-O-b-D-glucopyranoside (2) and two known compounds roseoside (3) and 3-oxo-a-ionol-9-O-b-D-glucopyranoside (4). (omitted)