A New Iridoid Glycoside and a New Iridoid from Pedicularis kansuensis f. aibiflora

A new iridoid glycoside 1 and a new iridoid 2 were isolated from the whole plant ofPedicularis kansuensis f. albiflora. Their structures were elucidated by spectroscopic methods.     

A New Neolignan Glycoside from Pedicularis armata

A new neolignan glycoside named armaoside (1) was isolated from the whole plant of Pedicularis armata Maxim. Its structure was elucidated by spectroscopic and chemical methods. Antibacterial assay showed that it has moderately antibacterial activities against Eschecichia coli, Bacillus subtilis and Staphylococcus aureus.     

阿拉善马先蒿中新木脂素甙成分研究

阿拉善马先蒿中新木脂素甙成分研究高建军，刘自民，王继和，贾忠建（兰州大学有机化学研究所应用有机化学国家重点实验室，兰州，７３００００）关键词阿拉善马先蒿，玄参科，新木脂素甙前文［１］报道了从阿拉善马先蒿（ＰｅｄｉｃｕｌａｒｉｓａｌａｓｃｈａｎｉｃａＭ...     

阿拉善马先蒿植物中单萜环烯醚甙的研究

阿拉善马先蒿(Pedicularis alaschania maxim)系玄参科马先蒿属植物,民间可代替夏枯草入药,主治淋巴结核、淋巴腺炎、高血压和甲状腺肿大等疾病。其化学成分研究尚未见报道。我们从马先蒿中分离得到2个单萜环烯醚甙P1和P2。P2经质谱(FAB MS)、核磁共振谱(~1H和~(13)C NMR)和红外光谱等数据与文献对照确定为桃叶珊瑚甙(aucubin)。P1为一新化合物。本文报道它们的分离与鉴定。     

A New Flavonoid from Oxytropis kansuensis

Oxytropis kansuensis Bunge (Leguminosae) is a medicinal plant growing in southeast and northwest areas of China. It has been used as a folk medicine in China for treatment of cold and inflammation of carbuncle swelling, pain and different types of bleedin…     

Secoiridoids and other chemotaxonomically relevant compounds in Pedicularis: phytochemical analysis and comparison of Pedicularis rostratocapitata Crantz and Pedicularis verticillata L. from Dolomites

We compared the respective metabolite patterns of two Pedicularis species from Dolomites. Seven phenylethanoid glycosides, i.e., verbascoside (1), echinacoside (2), angoroside A (3), cistantubuloside B1 (4), wiedemannioside C (5), campneoside II (11) and cistantubuloside C1 (12), together with several iridoid glucosides as aucubin (6), euphroside (7), monomelittoside (8), mussaenosidic acid (9) and 8-epiloganic acid (13) were identified. Pedicularis verticillata showed also the presence of greatly unexpected secoiridoids, ligustroside (14) and excelside B (15), very rare compounds in Lamiales. Both PhGs and iridoids are considered of taxonomical relevance in the Asteridae and their occurrence in Pedicularis was discussed. In particular, the exclusive presence of several compounds such as 8-epiloganic acid (13), campneoside II (11), cistantubuloside C1 (12), ligustroside (14) and excelside B (15) in Pedicularis rostratocapitata, and angoroside A (3), cistantubuloside B1 (4) and wiedemannioside C (5) in P. verticillata could be considered specific markers for the two botanical entities.     

A New Dihydroflavone Glycoside from Glycyrrhiza uralensis

A new dihydroflavone glycoside was isolated from the underground parts of Glycyrrhiza uralensis. Its structure was elucidated as 7-hydroxyl-4′-O-]3-D-(6″-O-α-hydroxylpropionyl) glucopyranosyl dihydroflavone by spectral methods.     

A New Flavanone and a New Flavanone Glycoside from ScuteUaria baicalensis

A new flavanone （2S）-5, 7, 2＇, 5＇-tetrahydroxy-flavanone 1 together with a new flavanone glycoside （2S）-5, 7, 2＇, 5＇-tetrahydroxy-flavanone 7-O-13-D-glucopyranoside 2, were isolated from the dry roots of Scutellaria baicalensis. Their structures were elucidated on the basis of spectroscopic data.     

A New Bianthraqinonc Glycoside from Eremurus chinensis

Eremurus chinensis Fedtch has a wide distribution in the western part of China; it hasbeen used in Chinese folk medicine for the treatment of rheumatism and physicalweaknessl. Only few reports describe polysaccharides'-' rather than other chemicalconstituents from the genus Eremurus. We report here the isolation and structuralelucidation of a new bianthraquinone glycoside, 8-O- P -D-glucopyranosyl-2,7'-hi(l,8dihydroxy-3-methyl-9,10-anthraqu 1 from E. chinensis.The EtOAc soluble fraction ob…     

Paeonivayin, A New Monoterpene Glycoside from Paeonia delavayi

Paeoniarootbark,"Dan-Pi"inChinese,isoneofthemostimportantherbaldrugswhichhasbeenusedfortreatmentofmuscularspasm,chestpains,diarrhoea,bloodandliverdisordersaswellasageneralanalgesicintraditionalChinesemedicine.SignificantchemicalandpharmacologicalinvestigationshavebeenconductedonthedifferentspeciesofPaeonia'-',P.albifiora,P.anomala,P.lacli/loraandP.sloffflllicosa.Asoneofthemainsourcesof"Dan-Pi",theconstituentsofP.delayal'iFranch.havenotbeenstudied.Inthecourseofourstudyonpharmacologicallyac…     

A New Phenylpropanoid Glycoside: Serratumoside A from Clerodendrum serratum

In the previous papers"', we have reported some chemical constituents fromClerodendrum serratum var. amplerghlium Moldenke. A continuation of our studies onthe same plant led to the isolation of a new phenylpropanoid, serratumoside A (l), whichis reported in this paper.Serratumoside A (l) with three known phenylpropanoid glycosides identified asacteoside', mwtinoside' and myricoside', respectively, were isolated from the Cserratum. Compound I was isolated as a brown amorphous powder, laly …     

A New Monoterpene Glycoside from Paeonia veitchii

The root cortex of Paeonia veitchii Lynch. is one of the most important crude drugs in Chinese traditional medicine. It is used as an analgesic, sedative, anti-inflammatory agent and a remedy for cardiovascular, extravasated blood1. The present paper deals with the structural elucidation of a new compound from this material. Compound 1, obtained as viscous oil, gave a quasi-molecular ion peak at m/z 521 [M-1]- in the negative FAB-MS, which was 42 amu greater than that of paeon…     

A New Bibenzyl Glycoside from Dendrobium moniliforme

A new bibenzyl glycoside has been isolated from the stems of Dendrobium moniliforme (L.) Sw.(Orchidaceas).Its structure has been identified on the basis of spectroscopic and chemical methods.     

A New Monoterpene Glycoside from Swertia punicea

The plant Swerlia punicea Hemsl. (Gentianaceae), distributed in Southwest China, isused in Chinese medicine for acute bilious hepatitis and cholecystitis'. Previousinvestigations of this plant have led the isolation of various compounds'. In thisinvestigation, seven compounds were isolated tyom the whole plants of S. punicea,collected in E-Shan, Yunnan Province in July, 1997 and identified by P. Y. Bet inKunming institUte of Botany, Chinese Academy of Sciences, where the specimen isdep…     

Chlorophytoside A, a New Labdane Diterpene Glycoside from Chlorophytum laxum

A new labdane-type diterpene glycoside 1 , chlorophytoside A, had been isolated from Chlorophytum laxum R.Br. The structure had been elucidated as (10S)-6α-hydroxylabda-8,13-dien-15,16-olide 3R-O-β-D-glucopyranoside on the basis of chemical and spectroscopic data.     

A New Iridoid Glucoside from Lagotis yunnanensis

Phytochemical investigation of Lagotis yunnanensis led to the isolation andidentification of a new iridoid glucoside 1, named as 10-O-(3, 4-dimethoxy-(E)-cinnamoyl)aucubin.Its structure was elucidated by spectroscopic methods.     

A New Pregnane Glycoside from Fermented Leaves of Agave americana

A new minor pregane glycoside was isolated from the fermented leaves of Agave americana.Its structure was elucidated as (20S)-5α-pregnane-3β，20-diol 20-O-β-D-glucopyrano-side(1)by spectral methods.     

A New Antimicrobial Flavonol Glycoside from Alchornea Davidii

A new flavonol glycoside,isorhamnetin-3-O- β-D-xyloside,was isolated from the extract of leaves and twigs of Alchornea davidii (Euphorbiaceae).Its structure was established on the basis of the spectral analysis and chemical degradation.Antimicrobial assay showed that it moderately inhibited the growth of test bacteria (Staphylocoocu aureus,Bacillus subtilis and Pseudomonas fluorescens)and fungi (Candida albicans,Aspergillus niger and Trichophyton rubrum) with MICs at 50μg/ml.     

A New Flavanone and a New Flavanone Glycoside from Scutellaria baicalensis

A new flavanone (2S)-5, 7, 2',5'-tetrahydroxy-flavanone 1 together with a new flavanone glycoside (2S)-5, 7, 2',5'-tetrahydroxy-flavanone 7-O-β-D-glucopyranoside 2, were isolated from the dry roots of Scutellaria baicalensis. Their structures were elucidated on the basis of spectroscopic data.     

A New Biphenyl Glycoside from the Leaves of Eriobotrya japonica

The leaves of Eriobotrya japonica (Thunb.) Lindl (Rosaceae) have been widely used as a folk medicine (known as “Pipaye”) to treat stomachache and promote antitussive, anti-inflammatory and diuretic effects in China. A number of triterpenoids1,2, sesquit…