首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 31 毫秒
1.
A new triterpene glycoside has been isolated from the roots ofMedicago sativa L. (family Fabaceae) — medicoside J, and its structure has been established as a medicagenic acid 3-O--D-glucopyranoside 28-O-[O--D-xylopyranosyl-(1 4)-O--L-rhamnopyranosyl-(1 2)--L-arabinopyranoside].Institute of the Chemistry of Plant Substances of the Uzbek Academy of Sciences. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 610–613, September–December, 1986.  相似文献   

2.
Summary Four substances have been isolated from the seeds ofCoronilla hyrcana: hyrcanoside, deglucohyrcanoside, hyrcanogenin, and substance E.It has been established that hyrcanoside (I) has the structure 3-(O--D-xylopyranosyl- <4 1 > -O--D-glycopyranosyl)-14-hydroxy-19-oxocard-4, 20 (22)-dienolide; deglucohyrcanoside (VII) is 3-(O--D-xylopyranosyl)-14-hydroxy-19-oxocard-4, 20 (22)-dienolide; and hyrcanogenin (V) is 3, 14-dihydroxy-19-oxocard-4, 20 (22)-dienolide. Both the aglycone hycanogenin (V) and its glycosides (I) and (VII) are new compounds.Khimiya Prirodnykh Soedinenii, Vol. 2, No. 4, pp. 251–257, 1966  相似文献   

3.
From the leaves of Crimean ivy we have isolated the previously known glycosides 3-O--L-Arap-28-O-[O--L-Rhap-(14)-O--D-Glcp-(16)--D-Glcp]hederagenin, 3-O-[O--L-Rhap-(12)--L-Arap]-28-O-[O--L-Rhap-(14)-O--D-Glcp-(16)--D-Glcp]oleanic acid and -hederagenin, and 3-O-[O--L-Rhap-(12)--L-Arap]-28-O-[O--D-Glcp-(16)--D-Glcp]hederagenin and a new one: tauroside H1 — 3-O-[O--L-Rhap-(12)-O--L-Arap]-28-O-[O--L-Rhap-(14)-O--D-Glcp-(16)--D-Glcp]echinocystic acid.M. V. Frunze Simferopol' State University. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 522–528, September–October, 1992.  相似文献   

4.
Conclusions The triterpene glycosides scabiosides D, E, F, and G have been isolated from the roots ofPatrinia scabiosofolia Fisch. et Link. It has been established that scabioside D is O--D-glucopyranosyl-(1 4)-O--L-arabopyranosyl-(1 3)-O-oleanoloyl-(28 1)--D-xylopyranose, and scabioside E is O--D-glucopyranosyl-(1 4)-O--L-arabopyranosyl-(1 3)-O-oleanoloyl-(28 1)-O--D-xylopyranosyl-(4 1)--L-rhamnopyranose.  相似文献   

5.
Abstruct Some physicochemical properties of methylated -cyclodextrins, i.e., heptakis(2,6-di-O-methyl)--cyclodextrin (DM--CyD) and heptakis(2,3,6-tri-O-methyl)--cyclodextrin (TM--CyD) were compared with those of natural -cyclodextrin (-CyD). Inclusion behaviors of -CyD and methylated -CyDs in water and in solid state were studied by solubility analysis, spectroscopies (UV, CD,13C-NMR and IR), X-ray diffractometry and thermal analysis, using an antiinflammatory drug flurbiprofen (FP) as a guest molecule. The spectral data suggest that the inclusion mode of FP-TM--CyD is somewhat different from those of FP--CyD and FP-DM--CyD. The solid complexes of FP with - and methylated -CyDs were obtained in molar ratio of 11, and their dissolution behavior and release from suppository base were examined. The data are presented suggesting that DM--CyD is particularly useful for improving the pharmaceutical properties of FP in various dosage forms.  相似文献   

6.
Conclusions Two additional cardiac glycosides, glucoerysimoside and glucoerysimosol, have been isolated from the seeds ofCheiranthus allioni Hort. Glucoerysimoside is strophanthidin 3-[O--D-digitoxopyranosyl-(4 1)-O--D-glucopyranosyl-(4 1)--D-glucopyranoside]. Glucoerysimosol is a new cardenolide having the same carbohydrate component, but its aglycone is strophanthidol. From these glycosides a new trisaccharide has been obtained which has been characterized as 4-O--cellobiosyl-D-digitoxose.Khar'kov Scientific-Research Institute of Pharmaceutical Chemistry. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 566–571, September–October, 1970.  相似文献   

7.
Two new terpene glycosides have been isolated from the leaves of the foxgloveDigitalis ciliata Trautv.: -D-glucopyranosyl oleanolate 3-O-[O--D-xylopyranosyl-(1 4)--L-rhamnopyranoside] and oleanolic acid 3-O-[O--D-xylopyranosyl-(1 4)--L-rhamnopyranoside].I. G. Kutateladze Institute of Pharmacochemistry Academy of Sciences of the Georgian SSR, Tbilisi. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 246–251, March–April, 1991.  相似文献   

8.
From the stems of Crimean ivyHedera taurica Carr. (fam. Araliaceae) we have isolated the new triterpene glycosides St-I3, St-I5, and St-I4a, which are, respectively, the 3–0--D-glucopyranoside 28-O-[O--L-rhamnopyranosyl-(14)-O-(6-O-acetyl--D-glucopyranosyl)-(16)-O--D-glucopyranosides] of oleanolic acid and of hederagenin and the 3-O--D-glucopyranuronoside 28-O--gentiobioside of oleanolic acid, and also the previously known 3-O-[O--D-galactopyranosyl-(12)--D-glucopyranuronoside 28-O--D-glucopyranoside] of oleanolic acid (glycoside Rb-4).Simferopol' State University. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 404–410, May–June, 1997.  相似文献   

9.
A new triterpene pentaglycoside — medicoside L — has been isolated from the roots ofMedicago sativa L. (Leguminosae). It has the structure of medicagenic acid 28-O--D-glucopyranoside 3-O-{[O--D-glucopyranosyl-(1 2)][O--L-rhamnopyranosyl-(1 3)]-O--D-glucopyranosyl-(1 2)}--D-glucopyranoside.Institute of the Chemistry of Plant Substances, Uzbek SSR Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 221–228, March–April, 1990.  相似文献   

10.
Conclusions The structure of leontoside E has been established as a hexaoside of hederagenin. Its O-glycosidic moiety is branched and consists of O--D-glucopyranosido(1 » 4)-O--D-glucopyranosido(1 » 3)-O--L-arabopyranose and its O-acyl glycosidic moiety is O--L-rhamnopyranosido(1 » 4)-O--D-glucopyranosido(1 » 6)-O--D-glucopyranose.Khimiya Prirodnykh Soedinenii, Vol. 4, No. 4, pp. 216–221, 1968  相似文献   

11.
Literature information is given on the current state of the study of the chemical transformation of cycloartane triterpenoids. A method has been developed for the transformation of the genin part of glycosides of 20,24-epoxycycloartan-25-ols with retention of the carbohydrate constituents. Three 25-norglycosides have been synthesized from natural cyclosieversigenin glycosides, namely 16-acetoxy-3,6-dihydroxy-20R,25-norcycloartan-20,24-olide 3-O-[O--L-arabinopyranosyl-(12)--D-xylopyranoside] 6-O--D-xylopyranoside (VIII), sodium 3,6,16,20-tetrahydroxy-20R,25-norcycloartan-24-oate 6-O--D-glucopyranoside 3-O--D-xylopyranoside (XII), and 20R,25-norcycloartane-3,6,16,20,24-pentaol 6-O--D-glucopyranoside 3-O--D-xylopyranoside (XIII).Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 710–718, September–October, 1993.  相似文献   

12.
Summary From a methanolic extract of the inflorescences ofAllium karataviense Rgl. we have isolated a new steroid glycoside of the spirostan series - karatavioside A, which is (25R)-spirost-5-ene-2,3-diol 3-0-{[0--D-xylopyranosyl-(13)-][O--D-glucopyranosyl-(12)-]-0--D-glucopyranosyl-(l4)--D-galactopyranoside}.Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 740–746, November-December, 1978. Original article submitted June 30, 1978.  相似文献   

13.
The PMR and13C NMR spectra of new withasteroids — visconolide and 28-hydroxywithaperuvin C, isolated fromPhysalis viscosa L. — have been investigated. A detailed analysis of the spectral characteristics obtained is given. For visconolide is proposed the structure of 4,12,17,28-pentahydroxy-1-oxo-5, 6-epoxy-22R-witha-2,24-dienolide, and for 28-hydroxywithaperuvin C that of 6,14,17,20R, 28-pentahydroxy-l-oxo-22R-witha-2, 4, 24-trienolide.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 657–663, September–October, 1985.  相似文献   

14.
We have isolated from Crimean ivy berries in addition previously known triterpene glycosides — 3-O--L-arabinopyranosyl-28-O-[O--L-rhamnopyranosyl-(1 4)-O--D-glycopyranosyl-(1 6)--D-glucopyranosyl]hederagenin, 3-O-[O--L-rhamnopyranosyl-(1 2)--L-arabinopyranosyl]-28-O-[O--L-rhamnopyranosyl-(1 4)-O--D-glucopyranosyl-(1 6)--D-glycopyranosyl]hederagenin, the new triterpene glycosides hederoside H2-3-O-[O--D-glycopyranosyl-(1 2)--D-glycopyranosyl-(1 2)--D-glucopyranosyl]-28-O-[O--D-glucopyranosyl-(1 6)--D-glucopyranosyl]oleanolic acid- and hederoside I-3-O-[O--D-glucopyranosyl-(1 2)--D-glucopyranosyl]-28-O-[O--D-glucopyranosyl-(1 6)--D-glucopyranosyl]hederagenin. Details of their13C NMR spectra are given.M. V. Frunze Simferopol' State University. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 779–783, November–December, 1990.  相似文献   

15.
    
Two new triterpene glycosides — cucmariosides C1 and C2 — have been isolated from the Far Eastern holothurianEupentacta (=Cucumaria)fraudatrix Djakonov et Baranova. Their structures have been established with the aid of13C NMR and PMR spectroscopy, partial acid hydrolysis, periodate oxidation, and methylation as 16-acetoxy-3-{[3-O-methyl--D-xylopyranosyl-(13)--D-glucopyranosyl-(14)] [-D-xylopyranosyl-(12)]--D-quinovopyranosyl-(12)--D-xylopyranosyloxy}holosta-7,23,24(cis)-triene and 16-acetoxy-3-{[3-O-methyl--D-xylopyranosyl-(13)--D-glucopyranosyl-(14)] [-D-xylopyranosyl-(12)]--D-quinovopyranosyl-(12)--D-xylopyranosyloxy}holosta-7,22,24(trans)-triene, respectively.Pacific Ocean Institute of Bioorganic Chemistry of the Far-Eastern Scientific Center of the USSR Academy of Sciences, Vladivostok. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 831–837, November–December, 1987.  相似文献   

16.
Thalicoside D — a new triterpene glycoside isolated fromThalictrum minus L. (Ranunculaceae) — has the structure of oleanolic acid 3-O-[O--L-rhamnopyranosyl-(12)-O--D-glucopyranosyl-(14)--L-arabinopyranoside 28-O-[O--D-glucopyranosyl-(16)--D-glucopyranoside]. This structure was established by the use of the results of acid and alkaline hydrolyses, SIMS spectra, and one- and two-dimensional NMR spectroscopy.Deceased.Irkutsk Institute of Organic Chemistry, Siberian Division, Russian Academy of Sciences. Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan [IKhRV AN RUz], Tashkent, FAX (3712) 62 73 48. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 398–403, May–June, 1994.  相似文献   

17.
From a methanolic extract of the bulbs ofAllium turcomanicum Rgl. we have isolated a new furostanol glycoside, turoside C (I). An acid hydrolysate was found to contain the aglycone — neoagigenin (II) — and the sugars D-xylose, D-glucose, and D-galactose in a ratio of 1:4:1. The structure of the furostanol (I) has been established by methylation, enzymatic hydrolysis, and oxidative cleavage, and also by the oxidative cleavage of (II), as (25S)-5-furostan-2,3,6,22,26-pentaol 26-O--D-glucopyranoside 3-O-{[O--D-xylopyranosyl-(13)]-[O--D-glucopyranosyl-(12)-O--D-glucopyranosyl-(12)]-O--D-glucopyranosyl-(14)--D-galacto-pyranoside}.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 514–522, July–August, 1979.  相似文献   

18.
The structures of two triterpene oligosides from the holothurianStichopus cloronotus (Brandt) have been established; they are: 23-acetoxy-3-[O--D-quinovopyranosyl-(12)--D-xylopyranosyloxy]holost-7(8)-ene and 23-acetoxy-3-[O--D-glucopyranosyl-(12)--D-xylopyranosyloxy]holost-7(8)-ene.Pacific Ocean Institute of Bioorganic Chemistry, Far Eastern Scientific Center, Academy of Sciences of the USSR, Vladivostok. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 181–184, March–April, 1981.  相似文献   

19.
From the epigeal part of the plantClimacoptera transoxana (Iljin) Botsch. have been isolated new triterpene glycosides — copterosides G and H, which are bisdesmosidic glycosides. On the basis of chemical transformations and spectral characteristics, copteroside G has been assigned the structure of gypsogenic acid 28-O--D-glucopyranoside 3-O--D-glucuronopyranoside, while copteroside H is gypsogenic acid 28-O--D-glucopyranoside 3-O-[O--D-xylopyranosyl-(1 2)--glucuronopyranoside].Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 60–64, January–February, 1984.  相似文献   

20.
Another new cardenolide glycoside has been isolated from the plantCheiranthus allioni Hort., and has been named glucocheiranthoside. Its chemical structure has been established as 3-(4-O--D-glucopyranosyl--D-gulmoethylpyranosyloxy)-14-hydroxy-19-oxo-5,14-card-20(22)-enolide.State Scientific Center for Drugs, Ukraine, 310085, Kharkov, USSR. ul. Astronomicheskaya, 33. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 269–271, March–April, 1994.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号