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Journals and Conferences
Xylocarpus granatum K. D. Koenig, a marine mangrove plant distributed mainly along the seashore along the Indian Ocean and in Southeast Asia, is used in folk medicine in Southeast Asia for the treatment of diarrhea, cholera, and fever diseases such as malaria, and also as an antifeedant [1, 2]. Since the first limonoid, gedunin, was reported from this plant… (More)
Loganin is an important constituent of the traditional Chinese medicine Fructus Corni, with several bioactivities. Microbial metabolism of loganin by intestinal bacteria was investigated. Two metabolites (log-1 and log-2) were isolated from anaerobic culture and their structures were identified by means of their ESI-MS, (1)H-NMR, (13)C-NMR and 2D-NMR… (More)
A phytochemical investigation of the roots of Symplocos caudata Wall (Symplocaceae) resulted in isolation and characterization of four optical isomers of a neolignan glycoside (1-4), a lignan lactone glycoside (5), a phenylpropanoid glycoside (6), as well as two known compounds (7, 8). Their structures were elucidated as… (More)
Morroniside, the most abundant iridoid glycoside of traditional Chinese medicines Fructus Corni, was shown to prevent diabetic angiopathies. During the course of our studies on its metabolism by intestinal bacteria, two metabolites (mor-1 and mor-2) were isolated and purified by thin layer chromatography (TLC) and preparative high performance liquid… (More)
From a China mangrove plant Acanthus ilicifolius Linn., a new compound, 5,11-epoxymegastigmane glucoside (1) was isolated along with one known compound of megastigmane glucosides, (6S, 9S)-roseoside (2). The structure of compound 1 was determined on the basis of 1D- and 2D-NMR techniques (DEPT, COSY, HMBC, HMQC, NOESY) and HR-FABMS. The structure of 1 was… (More)
A new taxane, 13-oxobaccatin III (2), and five known taxanes, 10-deacetyl-13-oxobaccatin III (1), baccatin III (3), 7-epi-10-deacetyltaxol (4), 19-debenzoyl-19-acetyltaxinine M (5), and 5a-decinnamoyltaxagifine (6), were isolated from the leaves of the Japanese yew, Taxus cuspidate. Their structures were established on the basis of the analysis of their… (More)
Forsythia suspensa (Thunb.) Vahl leaves have been consumed in China as a health-promoting functional tea for centuries. Three new polyhydroxytriterpenoid glycosides named suspensanosides A-C (1-3), seven known polyhydroxytriterpenoids (4-10), and 12 known phenolics (11-22) were identified from F. suspensa leaves. Compounds 1-10, 15-17, and 22 have not been… (More)
A new benzoxazolinone glucoside, 4-O-beta-D-glucopyranosyl-benzoxazolin-2(3H)-one, was isolated from Acanthus ilicifolius, a medicinal plant from south China. The complete (1)H and (13)C NMR assignments of the compound were carried out by using DEPT, HMBC, HMQC, NOESY and (1)H--(1)H COSY spectra.
Alantolactone (AL), an active sesquiterpene originating from Inula helenium, is a potential anticancer and anti-inflammatory agent. However so far, studies on AL metabolism have not been reported. In the present study, we have investigated for the first time the in vivo and in vitro metabolites of AL using ultra performance liquid chromatography combined… (More)
A novel germacrane sesquiterpenolide was isolated from the whole plant of Artemisia frigida. The structure was characterized as 1α,3α-dihydroxy-7β,11αH-germacra-4Z,10(14)-dien-12,6α-olide (1) on the basis of spectroscopic methods.