Further polyoxypregnane glycosides from Marsdenia tenacissima.

abstract：:Three new ursane-type triterpenoids, 2α,3β-dihydroxy-11α,12α-epoxy-urs-28,13β-olide (1), 2α,3β,24-trihydroxy-11α,12α-epoxy-urs-28,13β-olide (2), and 2α,3α,24-trihydroxy-11,20(30)-dien-urs-28,13β-olide (6), together with six known ursane-type triterpenoids (3-5, 7-9), were isolated from the EtOAc extract of the aerial ...

journal_title：Journal of Asian natural products research

authors： Jiao K,Li HY,Zhang P,Pi HF,Ruan HL,Wu JZ

更新日期：2013-09-01 00:00:00

abstract：:A new triterpenoid, 11α,12α-epoxy-3β-hydroxy-24-nor-olean-4(23)-en-28,13β-olide (1), and a new glycoside, benzyl 2-O-β-d-apiofuranosyl-(1 → 2)-β-d-glucopyranosyl benzoate (2), together with eight known triterpenoids (3-10), were isolated from Pilea cavaleriei subsp. cavaleriei. Their structures were established on the...

journal_title：Journal of Asian natural products research

authors： Ren HC,Qin RD,Wang Q,Cheng W,Zhang QY,Liang H

更新日期：2012-01-01 00:00:00

abstract：:Two new furostanol glycosides, ophiopogonins H (1) and I (2), were isolated from the fibrous root of Ophiopogon japonicus. The structures of 1 and 2 were established as (25R)-26-[(O-β-D-glucopyranosyl-(1→2)-β-D-glucopyranosyl)]-22α-hydroxyfurost-5-ene-3-O-[α-L-rhamnopyranosyl-(1→2)]-β-D-glucopyranoside and (25R)-26-[(...

journal_title：Journal of Asian natural products research

authors： Duan CL,Ma XF,Jiang Y,Liu JX,Tu PF

更新日期：2010-09-01 00:00:00

abstract：:A series of piplartine derivatives were synthesized via Baylis-Hillman reaction and evaluated for anticancer and antibacterial activities. The cytotoxicity of these compounds was examined in two different human tumor cell lines, IMR-32 and HeLa. The antibacterial activity was examined in Staphylococcus aureus and Pseu...

journal_title：Journal of Asian natural products research

authors： Kumar JU,Shankaraiah G,Kumar RS,Pitke VV,Rao GT,Poornima B,Babu KS,Sreedhar AS

更新日期：2013-01-01 00:00:00

abstract：:Two new isobenzofuranone derivatives, polyphthaliside A (1) and polyphthaliside B (2), and a new isocoumarin derivative, polyisocoumarin (3), were isolated from Polygonum cuspidatum. Their structures were elucidated by detailed spectroscopic analysis and chemical methods. The cytotoxicity activity and PTP1B inhibitory...

journal_title：Journal of Asian natural products research

authors： Jiang JS,Li FS,Feng ZM,Yang YN,Zhang PC

更新日期：2020-01-01 00:00:00

abstract：:One novel ursolic acid derivative sabiracin 1 (11,25-epoxy-3β-hydroxy-urs-12-en-28-oic acid) was isolated from the leaves of Carissa carandas, together with five known compounds para hydroxy benzaldehyde (2), ursolic acid (3), carissin (4), 22α-hydroxyursolic acid (5) and β-sitosterol-3-O-β-D-glucopyranoside (6). Comp...

journal_title：Journal of Asian natural products research

authors： Bano Z,Begum S,Ali SS,Kiran Z,Siddiqui BS,Khawaja S,Ahmed A

更新日期：2020-07-10 00:00:00

abstract：:By various chromatographic methods, one new phenylpropanoid, acanthopanic acid (1), and three known compounds, 1,2-O-dicaffeoylcyclopenta-3-ol (2), (4S)-α-terpineol 8-O-β-D-glucopyranoside (3), and rutin (4), were isolated from the methanol extract of the Acanthopanax koreanum leaves. Their structures were elucidated ...

journal_title：Journal of Asian natural products research

authors： Nhiem NX,Kim KC,Kim AD,Hyun JW,Kang HK,Van Kiem P,Van Minh C,Thu VK,Tai BH,Kim JA,Kim YH

更新日期：2011-01-01 00:00:00

abstract：:Nine new fatty acid derivatives, including seven methoxylated (1, 2, and 4-8) and two hydroxylated (3 and 9) fatty acids, have been isolated from the ethanol extract of the stem bark of Fraxinus sieboldiana. Their structures were determined by spectroscopic methods including IR, MS, 1D, and 2D NMR experiments. The 3- ...

journal_title：Journal of Asian natural products research

authors： Lin S,Zhang YL,Liu MT,Zi JC,Gan ML,Song WX,Fan XN,Wang SJ,Yang YC,Shi JG

更新日期：2012-01-01 00:00:00

abstract：:A new flavonoid glycoside, 5,7-dihydroxy-4'-methoxyflavone-7-O-[6-O-(4-O-acetyl-alpha-L-rhamnosyl)-3-O-beta-D-glucosyl]-6-O-acetyl-beta-D-glucoside and three known flavonoid glycosides, 5,7-dihydroxy-4-methoxyflavone-7-0-[6-0-(4-0-acetyl-alpha-L-rhamnosyl)]-beta-D-glucoside, 3,5,7, 4'-tetrahydroxyflavonol-3-O-beta-D-g...

journal_title：Journal of Asian natural products research

authors： Yu SC,Wu QL,Wang LW,Yang JS,Xiao PG

更新日期：1999-01-01 00:00:00

abstract：:Two new phthalates bis(2-ethylundecyl)phthalate and bis(2-ethyltridecyl)phthalate have been isolated from the chloroform-soluble portion of the whole plant of Nepeta clarkei along with one known compound β-amyrin. The structures of the two new compounds and β-amyrin were assigned on the basis of their ¹H and ¹³C NMR s...

journal_title：Journal of Asian natural products research

authors： Hussain J,Rehman NU,Hussain H,Ali L,Al-Harrasi A

更新日期：2012-01-01 00:00:00

abstract：:Mucor spinosus has been employed for the biotransformation of cinobufagin (1) to afford three metabolites. On the basis of their physico-chemical data, the structures of the transformation products have been characterized as 1beta-hydroxy-cinobufagin (2), 12beta-hydroxy-cinobufagin (3) and 1beta,12beta-dihydroxy-cinob...

journal_title：Journal of Asian natural products research

authors： Zhang W,Ye M,Qu GQ,Wu WY,Chen YJ,Guo DA

更新日期：2005-06-01 00:00:00

abstract：:A novel 2,3-secoaromadendrane-type sesquiterpenoid metabolite, psilosamuiensin A (1), was isolated from the broth of Psilocybe samuiensis. The structure of psilosamuiensin A was established by spectroscopic data and its configurations were confirmed by single crystal X-ray crystallographic analysis. This is the first ...

journal_title：Journal of Asian natural products research

authors： Pornpakakul S,Suwancharoen S,Petsom A,Roengsumran S,Muangsin N,Chaichit N,Piapukiew J,Sihanonth P,Allen JW

更新日期：2009-01-01 00:00:00

abstract：:Four new diterpenoids named 1-epi-9-hydroxydepressin (1), 1-epi-8-hydroxydepressin (2), 2,13,9-trihydroxy-labda-8(17),12(E),14-triene (3) and tagalsin I (4) were isolated from Euphorbia rapulum. The structures of these compounds were elucidated by means of various spectroscopic methods. All the isolated compounds were...

journal_title：Journal of Asian natural products research

authors： Liu XX,Shang L,Huang C,Feng XS,Li W,Sha Y,Huang J,Wang JH

更新日期：2016-09-01 00:00:00

abstract：:A novel tetraterpenoid named methyl tortuoate C (1) has been isolated from the soft coral Sarcophyton tortuosum Tix.-Dur. The structure of 1 was determined on the basis of spectroscopic methods. ...

journal_title：Journal of Asian natural products research

authors： Lan WJ,Li HJ,Yan SJ,Su JY,Zeng LM

更新日期：2007-04-01 00:00:00

abstract：:Two new sesquiterpene pyridine alkaloids, Chinese bittersweet alkaloid A (1) and Chinese bittersweet alkaloid B (2), together with five known compounds 3β- hydroxyolean-9(11),12-diene, β-sitosterol, 1β,2β,6α,15β-tetraacetoxy-8β,9α- dibenzoyloxy-β-dihydroagarofuran, angulatin A and angulatin J, were isolated from the r...

journal_title：Journal of Asian natural products research

authors： Chang X,Wang ZY,Chen X,Ma YN,Zhang HY,Zhao TZ

更新日期：2019-11-01 00:00:00

abstract：:Vernonia travancorica Hook. f. is a taxon, endemic to the evergreen forests of Western Ghats (above 1000 m), India. From the aqueous EtOH extract of the air-dried corymbose inflorescence a novel secondary metabolite, 3-O-beta-[beta-(6'''-acetyl)-D-glucopyranosyl(1-->2)]-D-glucopyranosyl kaempferol (1), has been isolat...

journal_title：Journal of Asian natural products research

authors： Seetharaman TR,Petrus AJ

更新日期：2004-12-01 00:00:00

abstract：:Three new triterpenoid saponins, julibrosides A5-A7 (1-3), together with five known saponins (4-8), were isolated from the stem bark of Albizia julibrissin. Their structures were elucidated on the basis of extensive spectroscopic data analysis of MS, 1D and 2D NMR, and chemical methods. Compounds 7 and 8 were isolated...

journal_title：Journal of Asian natural products research

authors： Wang XD,Han QH,Zhang J,Zhang QY,Tu PF,Liang H

更新日期：2019-06-01 00:00:00

abstract：:Four new minor taxanes (1-4) have been isolated from Ts-19 cell cultures of Taxus chinensis together with five known taxanes (5-9) by silica gel chromatography combined with semi-preparative HPLC chromatography. On the basis of the analyses of the chemical and spectroscopic (IR, MS, 1D, and 2D NMR) data, the structure...

journal_title：Journal of Asian natural products research

authors： Xie D,Jia HT,Zhang Y,Zou JH,Yin DL,Chen XG,Yan YN,Dai JG

更新日期：2009-06-01 00:00:00

abstract：:Five new indole alkaloid glucosides named isatindigotindolosides A-E (1-5), along with three known analogs (6-8), were isolated from an aqueous extract of the Isatis indigotica roots. Their structures including the absolute configurations were determined based on comprehensive spectroscopic data analysis, combined wit...

journal_title：Journal of Asian natural products research

authors： Liu YF,Chen MH,Lin S,Li YH,Zhang D,Jiang JD,Shi JG

更新日期：2016-01-01 00:00:00

abstract：:(-)-Incrustoporin (1) has been synthesized using aldol condensation of ethyl p-tolyl-acetate (2) and (2R)-benzoyloxy-butanal (3), followed by acid-catalyzed deprotection of the benzoyl group, lactone ring-closure, and elimination of the beta-OH in a one-pot manner. The aldehyde 3 was prepared from the commercially ava...

journal_title：Journal of Asian natural products research

authors： Yu Q,Liu JF,Wu YL

更新日期：1999-01-01 00:00:00

abstract：:Two new bromophenols, (E)-3-(2,3-dibromo-4,5-dihydroxyphenyl)-2-methylpropenal (1) and 3-(2,3-dibromo-4,5-dihydroxyphenyl)-2-methyl-1-propanol (2), together with 11 known bromophenols (3-13), were isolated from the ethanolic extract of the brown alga Leathesia nana S. et G. Their structures have been elucidated by spe...

journal_title：Journal of Asian natural products research

authors： Xu XL,Fan X,Song FH,Zhao JL,Han LJ,Yang YC,Shi JG

更新日期：2004-09-01 00:00:00

abstract：:Glycyrrhetinic acid (GA) is an active component of licorice root that has long been used as a herbal medicine for the treatment of peptic ulcer, hepatitis, and pulmonary and skin diseases in Asia and Europe. In this study, we analyzed the effect of GA extracted from Glycyrrhiza uralensis Fisch. on the expression of To...

journal_title：Journal of Asian natural products research

authors： Peng LN,Li L,Qiu YF,Miao JH,Gao XQ,Zhou Y,Shi ZX,Xu YL,Shao DH,Wei JC,Ma ZY

更新日期：2011-10-01 00:00:00

abstract：:Three new flavonol glycosides, kaempferol-3-O-(6-trans-caffeoyl)-beta-D-glucopyranosyl-(1 --> 2)-beta-D-glucopyranoside (1), kaempferol-3-O-(6-trans-caffeoyl)-beta-D-glucopyranosyl-(1 --> 2)-beta-D-glucopyranoside-7-O-beta-D-glucopyranoside (2), and kaempferol-3-O-(6-trans-p-coumaroyl)-beta-D-glucopyranosyl-(1 --> 2)-...

journal_title：Journal of Asian natural products research

authors： Li N,Li X,Meng DL,Guo YQ,Wang JH

更新日期：2006-01-01 00:00:00

abstract：:Further investigation on the saponins of the flower-buds of Panax ginseng C. A. Meyer has resulted in the isolation and structural elucidation of a pair of new 24-epimers of dammarane type saponins named ginsenoside I and II. The structures of the epimers were characterized on the basis of chemical and spectral eviden...

journal_title：Journal of Asian natural products research

authors： Qiu F,Ma ZZ,Xu SX,Yao XS,Che CT,Chen YJ

更新日期：2001-01-01 00:00:00

abstract：:Two new compounds, 3-O-(13-hydroxy-9Z,11E,15E-octadecatrienoyl) cycloeucalenol (1) and 24'-hydroxy-tetracosyl ferulate (2), together with one known compound, tetracosyl ferulate (3), were isolated from the dried stems of Gnetum pendulum. The two new compounds were structurally elucidated by spectroscopic and chemical ...

journal_title：Journal of Asian natural products research

authors： Xiang WS,Wang JD,Wang XJ,Zhang J

更新日期：2008-11-01 00:00:00

abstract：:Three new triterpene saponins, ilekudinosides T-V (1-3), along with six known saponins were isolated from the 70% ethanolic extract of the leaves of Ilex kudingcha. The new saponins were characterized as 3-O-beta-d-glucopyranosyl-(1 --> 3)-[alpha-l-rhamnopyranosyl-(1 --> 2)]-alpha-l-arabinopyranosyl-3beta,19alpha-dihy...

journal_title：Journal of Asian natural products research

authors： Tang L,Jiang Y,Tian XM,Zhou SX,Tu PF

更新日期：2009-06-01 00:00:00

abstract：:A new cucurbitane triterpene, siraitic acid F (1), has been isolated from the roots of Siraitia grosvenorii (Swingle) C. Jeffrey, and its structure has been elucidated as 29-nor-4,24-diene-3,11-dioxo-19-hydroxy-6,19-cyclocucurbitane-26-oic acid on the basis of spectroscopic evidences, including a series of 2D NMR anal...

journal_title：Journal of Asian natural products research

authors： Si JY,Chen DH,Tu GZ

更新日期：2005-02-01 00:00:00

abstract：:Ophiopogon japonicus polysaccharide (FOJ-5) from Radix ophiopogonis has shown anti-myocardial ischemic action in vitro and in vivo in our previous studies. In order to clarify the influence of chemical modifications on the action, a series of sulfated FOJ-5 (FOJ-5-S) with different substitution degrees were prepared a...

journal_title：Journal of Asian natural products research

authors： Zheng Q,Feng Y,Xu DS,Lin X,Chen YZ

更新日期：2009-01-01 00:00:00

abstract：:Three new alkylated benzoquinones, 2-hydroxy-5-ethoxy-3-nonyl-1,4-benzoquinone (1), 5-O-butyl-embelin (2), and 2,5-dihydroxy-6-methyl-3-pentadecyl-1,4-benzoquinone (3), together with seven known analogues (4-10), were isolated from the stems and twigs of mangrove plant, Aegiceras corniculatum. Their structural elucida...

journal_title：Journal of Asian natural products research

authors： Li Y,Dong C,Xu MJ,Lin WH

更新日期：2020-02-01 00:00:00

abstract：:Gamboge is a dry resin secreted from Garcinia hanburryi, and gambogenic acid (GNA) is one of the main active compounds of gamboge. We have previously demonstrated the anticancer activity of GNA in A549 cells and pointed out its potential effects in anticancer therapies. Previous studies reported that GNA induced apopt...

journal_title：Journal of Asian natural products research

authors： Cheng H,Su JJ,Peng JY,Wang M,Wang XC,Yan FG,Wang XS,Li QL

更新日期：2011-10-01 00:00:00