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Distyly and cryptic heteromorphic self-incompatibility in A4ussaenda macrophylla (Rubiaceae) 认领 引用 被引量：3
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作者 Xiao-Qin Wu Pei-Xing Li +1 位作者 Xiao-Fang Deng Dian-Xiang Zhang 《Journal of Systematics and Evolution》 SCIE CAS CSCD 2015年第2期166-178,共13页
Typical distylous species display both reciprocal herkogamy and heteromorphic incompatibility, which exclude self- and intramorph pollination and accordingly promote intermorph pollination. Here we explore an unusual ... Typical distylous species display both reciprocal herkogamy and heteromorphic incompatibility, which exclude self- and intramorph pollination and accordingly promote intermorph pollination. Here we explore an unusual distylous flower associated with self- and intramorph compatibility in Mussaenda macrophylla Wall. The species did not exhibit a precise reciprocal herkogamy, and the populations studied had a slight bias in favor of the short-styled morph （S-morph）. In addition, pollen tube growth in intermorph pollination was faster than either in intramorph or self-pollination, indicating that cryptic heteromorphic self-incompatibility occurred in M. macrophylla. Specifically, pollen tube growth rates after legitimate and illegitimate pollination were much more highly differentiated in long-styled morph （L-morph） than in S-morph, which might be attributed to the increased de- esterified pectin in the tip of L-morph pollen tube wall in comparison with S-morph. Transmission electron microscopic observation revealed illegitimate self-pollinated pollen tubes of two morphs were seriously degraded with the large autolysosome-like vacuoles in cytoplasm of L-morph pollen tube but accumulating small vacuoles in that of S-morph pollen tube, suggesting that incompatible pollen tubes might undergo autophagic programmed cell death except self-incompatible S-morph pollen tubes. Our results indicate that M. macrophylla is morphologically distylous with a cryptic heteromorphic self-incompatibility breeding system, which functions differently in S-morph with self-pollination compared with other illegitimate pollination. 展开更多
关键词 cryptic self-incompatibility distyly, Mussaenda macrophylla pollen tube growth, Rubiaceae.
Conflicting phylogenetic signals in genomic data of the coffee family (Rubiaceae) 认领 引用 被引量：2
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作者 Niklas Wikström Birgitta Bremer Catarina Rydin 《Journal of Systematics and Evolution》 SCIE CAS CSCD 2020年第4期440-460,共21页
Reconstructions of phylogenetic relationships in the flowering plant family Rubiaceae have up until now relied heavily on single-or multi-gene data,primarily from the plastid compartment.With the availability of cost-... Reconstructions of phylogenetic relationships in the flowering plant family Rubiaceae have up until now relied heavily on single-or multi-gene data,primarily from the plastid compartment.With the availability of cost-and time-efficient techniques for generating complete genome sequences,the opportunity arises to resolve some of the relationships that,up until now,have proven problematic.Here,we contribute new data from complete 58 plastid genome sequences,representing 55 of the currently 65 recognized tribes of the Rubiaceae.Also contributed are new data from the nuclear rDNA cistrons for corresponding taxa.Phylogenetic analyses are conducted on two plastid data sets,one including data from the protein coding genes only,and a second where protein coding data are combined with non-coding regions,and on a nuclear rDNA data set.Our results clearly show that simply adopting a“more characters”approach does not resolve the relationships in the Rubiaceae.More importantly,we identify conflicting phylogenetic signals in the data.Analyses of the same plastid data,treated as nucleotides or as codon-degenerated data,resolve and support conflicting topologies in the subfamily Cinchonoideae.As these analyses use the same data,we interpret the conflict to result from erroneous assumptions in the models used to reconstruct our phylogenies.Conflicting signals are also identified in the analyses of the plastid versus the nuclear rDNA data sets.These analyses use data from different genomic compartments,with different inheritance patterns,and we interpret the conflicts as representing“real”conflicts,reflecting biological processes of the past. 展开更多
关键词 coffee family conflicting signals phylogenomics plastid DNA rDNA Rubiaceae
Application of DNA barcodes in Hedyotis L.(Spermacoceae,Rubiaceae) 认领 引用 被引量：5
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作者 Xing GUO Mark R SIMMONS +2 位作者 Paul Pui-Hay BUT Pang-Chui SHAW Rui-Jiang WANG 《Journal of Systematics and Evolution》 SCIE CAS CSCD 北大核心 2011年第3期203-212,共10页
The potential application of DNA barcodes of plastid （matK, trnH-psbA, petD, and rbcL） and nuclear （internal transcribed spacer （ITS） of rDNA） DNA regions was investigated for 25 Hedyotis taxa. The ITS showed th... The potential application of DNA barcodes of plastid （matK, trnH-psbA, petD, and rbcL） and nuclear （internal transcribed spacer （ITS） of rDNA） DNA regions was investigated for 25 Hedyotis taxa. The ITS showed the best species discrimination by resolving 23 of the species as exclusive lineages with no shared alleles between any of the 24 distinct species （H. assimilis and/-/, mellii are not supported as distinct species based on our molecular and morphological data）. Conversely, rbcL performed the worst and only resolved 10 of the species as exclusive lineages, and 10 species with shared alleles. Using ITS has the advantage of high PCR amplification success and it provides good intra- and interspecific variation distribution patterns. The most powerful plastid markers were petD and trnH-psbA, but we could amplify and sequence trnH-psbA for only 83% of the accessions sampled. Combination of ITS and petD performed extremely well, with all 24 of the distinct species resolved as exclusive lineages and no shared alleles between any of the distinct species. We therefore recommend ITS, or a combination of ITS andpetD, as the standard DNA barcode in Hedyotis, but acknowledge that there are no shared alleles between distinct species for matK and rbcL combined. 展开更多
关键词 DNA barcode Hedyotis molecular identification Rubiaceae taxonomy.
In vitro germination and shoot proliferation of the threatened species Cinchona officinalis L(Rubiaceae). 认领 引用 被引量：2
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作者 Rosa Armijos-Gonzalez Cesar Perez-Ruiz 《Journal of Forestry Research》 SCIE CAS CSCD 2016年第6期1229-1236,共8页
Cinchona officinalis （Rubiaceae） is an endemic species of the Loja Valley in southern Ecuador with medicinal uses. Because of over-exploitation in the nine- teenth century and more recent disturbances to its ecosyst... Cinchona officinalis （Rubiaceae） is an endemic species of the Loja Valley in southern Ecuador with medicinal uses. Because of over-exploitation in the nine- teenth century and more recent disturbances to its ecosystem, C. officinalis populations are threatened. Currently, natural regeneration of the populations is low, despite its high plant regeneration and seed formation capacity. In the present study, an efficient protocol for germination, shoot proliferation and plantlets regeneration was developed for this species. Phenolic content and germination rate of C. officinalis seeds were compared with a control species, C. pubescens. Nodal segments from seedlings of C. officinalis were cultured on Gamborg medium supplemented with different combinations of plant growth regulators. Because the phenol content is high in C. officinalis, the phenolic should be removed with hydrogen peroxide or water washes to stimulate germination. Shoots and callus developed from nodal segments within 45 days using most of the tested combinations of plant growth regulators. The best rates of shoot proliferation, callus formation and adventitious buds were obtained in medium supplemented with 5.0 mg L^-1 6-benzyl-aminopurine and 3.0 mg L^-1 indole- 3-butyfic acid. 展开更多
关键词 Callus Cinchona officinalis Germination Phenols Rubiaceae Shoot
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Foonchewia guangdongensis gen. et sp. nov. (Rubioideae: Rubiaceae) and its systematic position inferred from chloroplast sequences and morphology 认领 引用 被引量：1
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作者 Hai-Zhen WEN Rui-Jiang WANG 《Journal of Systematics and Evolution》 SCIE CAS CSCD 2012年第5期467-476,共10页
The new species, Foonchewia guangdongensis R. J. Wang ＆ H. Z. Wen and the new monotypic genus Foonchewia R. J. Wang （Rubioideae, Rubiaceae）, are described from eastern Guangdong, China. It is characterized by its s... The new species, Foonchewia guangdongensis R. J. Wang ＆ H. Z. Wen and the new monotypic genus Foonchewia R. J. Wang （Rubioideae, Rubiaceae）, are described from eastern Guangdong, China. It is characterized by its subshrub habit, pentamerous and heterostylous flowers, 2-1ocular ovary with many ovules, and apically dehiscent capsules with numerous angulated seeds. Phylogenetic analysis of four chloroplast DNA regions （rbcL, rps16, ndhF, and atpB-rbcL） revealed that the new genus is nested in the Spermacoceae alliance and is sister to Dunnia. Morphological comparison between these two genera indicated that they had few synapomorphies; it was therefore inappropriate to classify the new genus in the existing tribe Dunnieae, and a new tribe, Foonchewieae R. J. Wang, is accordingly proposed. 展开更多
关键词 Foonchewia Foonchewia guangdongensis Foonchewieae new genus new species Rubiaceae.
Phylogenetic relationships in the Neotropical tribe Hamelieae (Rubiaceae, Cinchonoideae) and comments on its generic limits 认领 引用
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作者 Szilvia STRANCZINGER Aniko GALAMBOS +1 位作者 Dalma SZENASY Balint SZALONTAI 《Journal of Systematics and Evolution》 SCIE CAS CSCD 2014年第5期
关键词 Hamelieae ITS molecular phylogeny Rubiaceae trnL-F
Molecular Phylogeny of the Philippine Endemic Genus AntherosteleBremek. (Rubiaceae) Inferred from ITS Data (nrDNA) and Its Conservation Status 认领 引用
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作者 Jasper John A. Obico Grecebio Jonathan D. Alejandro 《American Journal of Plant Sciences》 CAS 2012年第10期1399-1407,共9页
Antherostele Bremek. is an understudied genus of Rubiaceae endemic to the Philippines formerly comprising four species of shrubs or small trees distributed in Luzon and Visayas. In this first molecular study of the ge... Antherostele Bremek. is an understudied genus of Rubiaceae endemic to the Philippines formerly comprising four species of shrubs or small trees distributed in Luzon and Visayas. In this first molecular study of the genus, the ITS (nrDNA) was utilized to determine the monophyly of Antherostele, reconstruct its phylogeny, and resolve its placement in Rubiaceae. Furthermore, an update on the assessment of its conservation status of the included species in the genus was done. Antherostele is monophyletic and is nested within the tribe Urophylleae of subfamily Rubioideae which confirms its segregation from Urophyllum and its placement within Urophylleae as proposed by earlier authors based on morphology. However, the relationships of Urophylleae members remain unresolved. Antherostele is united by reflexed corolla, hairs on upper side of the corolla lobes and syngenesious stamens. The montane A. luzoniensis with small leaves is found to be sister to the rest of Antherostele species. Antherostele is hypothesized to originate from montane regions and diversified by forming larger leaves following dispersal to the shaded forest understory. From the five species of Antherostele currently recognized in the study, two are endangered (A. banahaensis, A. grandistipula) and three are critically endangered including a new species (A. callophylla, A. luzoniensis, A. sp. nov.) following the criteria of IUCN. 展开更多
关键词 Antherostele Philippine Endemic ITS IUCN Rubiaceae Urophylleae
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Chemistry and Biological Activity of Condamineeae Tribe: A Chemotaxonomic Contribution of Rubiaceae Family 认领 引用
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作者 Vinicius F. Moreira Ivo J. C. Vieira Raimundo Braz-Filho 《American Journal of Plant Sciences》 CAS 2015年第16期2612-2631,共20页
This study is a review of the Condamineeae tribe, through the acquisition of data from phytochemical studies and evaluation of genera activities that constitute the tribe, in order to contribute to chemotaxonomic clas... This study is a review of the Condamineeae tribe, through the acquisition of data from phytochemical studies and evaluation of genera activities that constitute the tribe, in order to contribute to chemotaxonomic classification of this tribe in the Rubiaceae family. This review also states the scarcity of phytochemical investigations of several genera and consequently a lot of species of family. 展开更多
关键词 Biological Activity Condamineeae Chemotaxomy Phytochemistry Rubiaceae
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New iridoid glucoside from Wendlandia tinctoria roots 认领 引用
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作者 Biswanath Dinda Sudhan Debnath +2 位作者 Santanu Majumder Noriko Sato Yoshihiro Harigaya 《Chinese Chemical Letters》 SCIE CAS CSCD 2011年第10期1233-1236,共4页
A new iridoid glucoside,10-O-veratroyleranthemoside（1） was isolated from the roots of Wendlandia tinctoria.The structure was established by spectroscopic（including 2D NMR） and chemical methods.
关键词 Wendlandia tinctoria Rubiaceae Iridoid glucoside 10-O-Veratroyleranthemoside
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A New Bis-iridoid Glucoside from Mussaenda incana 认领 引用
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作者 Biswanath DINDA Sudhan DEBNATH +3 位作者 Santanu MAJUMDER Shiho ARIMA Nariko SATO Yoshihiro HARIGAYA 《Chinese Chemical Letters》 SCIE CAS 2006年第10期1331-1334,共4页
A new bis-iridoid glucoside, incaside 1 was isolated along with known iridoid, 6-0- veratroylcatalposide from the stem-bark of Mussaenda incana. The structure of the new iridoid was established mainly on the basis of ... A new bis-iridoid glucoside, incaside 1 was isolated along with known iridoid, 6-0- veratroylcatalposide from the stem-bark of Mussaenda incana. The structure of the new iridoid was established mainly on the basis of the spectroscopic （including 2D NMR） and chemical studies of its octaacetate 1a. 展开更多
关键词 Mussaenda incana Rubiaceae incaside bis-iridoid glucoside.
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Two folate-derived analogues from an aqueous decoction of Uncaria rhynchophylla 认领 引用 被引量：4
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作者 WANG Yue GUO Qing-Lan +3 位作者 LI Ruo-Fei XU Cheng-Bo ZHU Cheng-Gen SHI Jian-Gong 《Chinese Journal of Natural Medicines》 SCIE CAS CSCD 2019年第12期928-934,共7页
Two new folate-derived analogues,named uncarophyllofolic acids A(1)and B(2),respectively,were isolated from the Uncaria rhynchophylla hook bearing stem(Gouteng in Chinese).The distinct stereochemical structures of 1 a... Two new folate-derived analogues,named uncarophyllofolic acids A(1)and B(2),respectively,were isolated from the Uncaria rhynchophylla hook bearing stem(Gouteng in Chinese).The distinct stereochemical structures of 1 and 2 were determined by spectroscopic data analysis in combination with acidic hydrolysis and Marfey’s derivatization,along with comparison of their specific rotation and Cotton effect(CE)data with those of the biogenetically related known derivatives as well as theoretical calculations of electronic circular dichroism(ECD)spectra.A plausible biosynthetic pathway of 1 and 2,associating to folate metabolism and the previously reported orychophragines A-C from Orychophragmus violaceus,is discussed. 展开更多
关键词 Rubiaceae Uncaria rhynchophylla Folate derivative Uncarophyllofolic acid Folate metabolism
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Triterpenes from the stem bark of Mitragyna diversifolia and their cytotoxic activity 认领 引用 被引量：5
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作者 CAO Xing-Fen WANG Jun-Song +1 位作者 WANG Peng-Ran KONG Ling-Yi 《Chinese Journal of Natural Medicines》 SCIE CAS CSCD 2014年第8期628-631,共4页
AIM: To study the chemical constituents and bioactivity of the stem bark of Mitragyna diversifolia. METHOD: Compounds were isolated by various chromatographic methods. Their structures were elucidated on the basis of ... AIM: To study the chemical constituents and bioactivity of the stem bark of Mitragyna diversifolia. METHOD: Compounds were isolated by various chromatographic methods. Their structures were elucidated on the basis of spectroscopic techniques(IR, UV, MS, and NMR), and they were evaluated for their cytotoxic activities by the MTT method. RESULTS: Eight triterpenes were isolated and identified as 3α, 6β, 19α-trihydroxy-urs-12-en-28-oic acid(1), 3β, 6β, 19α- trihydroxy-urs-12-en-28-oic acid(2), 3-oxo-6β-19α-dihydroxy-urs-12-en-28-oic acid(3), 3β, 6β, 19α-trihydroxy-urs-12-en-24, 28-dioic acid 24-methyl ester(4), 3β, 6β, 19α, 24-tetrahydroxy-urs-12-en-28-oic acid(5), rotundic acid(6), 23-nor-24-exomethylene- 3β, 6β, 19α-trihydroxy-urs-12-en-28-oic acid(7), and pololic acid(8), respectively. All of the isolates were tested against two human tumor cell lines, MCF-7(breast) and HT-29(colon). CONCLUSION: Compound 1 was a new triterpene. Compounds 5-7 exhibited potent inhibitory effects on the growth of MCF-7 and HT-29 cells, and the others showed no cytotoxicity. 展开更多
关键词 Mitragyna diversifolia Rubiaceae Triterpenes Cytotoxicity
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Is the pollination biology of Bathysa and Schizocalyx consistent with their segregation?A first approach for two sympatric species in southeastern Brazil 认领 引用
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作者 Leandro FREITAS Mariana ANDRICH 《Journal of Systematics and Evolution》 SCIE CAS CSCD 2013年第5期522-535,共14页
Tribe Condamineeae appears to be well supported in recent phylogenetic studies.However,the species of Bathysa were divided into two clades,leading to restoration of Schizocalyx.We studied the reproductive biology of o... Tribe Condamineeae appears to be well supported in recent phylogenetic studies.However,the species of Bathysa were divided into two clades,leading to restoration of Schizocalyx.We studied the reproductive biology of one species from each clade,which occur sympatrically in the montane Brazilian Atlantic forest.Flowering overlap was short(from December to March in B.australis and from February to June in S.cuspidatus).The flowers of both species are protogynous and homostylous and last for about 3 days.The unit of pollination in B.australis is the inflorescence.Its flowers have a greenish hypocrateriform corolla(tube about 5 mm long)and were mainly pollinated by bees and wasps in search of nectar.Schizocalyx cuspidatus has white flowers with an infundibuliform corolla(tube about 8 mm long),and its main pollinators were stingless bees in search of pollen.The pollination systems of the two species did not correspond to their pollination syndromes.Morphological differences between Bathysa and Schizocalyx were reflected in their pollination systems,with greater phenotypic specialization in S.cuspidatus,the flowers of which offer pollen as the main resource,an unusual feature within Rubiaceae.Schizocalyx cuspidatus showed higher reproductive capacity by having more inflorescences per plant,more ovules per flower,and twice the proportion of flowering individuals.However,the reproductive efficiency(fruit set,seed/ovule ratio)did not differ between the species,despite the higher frequency of visits by pollinators to S.cuspidatus.Self-compatibility in B.australis and self-incompatibility in S.cuspidatus seem to explain these results. 展开更多
关键词 Condamineeae inter-specific competition phenology pollen-flower pollination syndromes Rubiaceae,self-incompatibility.
Flowers Are Evoked to Bring Us Delicious Coffee 认领 引用
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作者 Paula Cristina da Silva Angelo 《Agricultural Sciences》 2024年第7期754-779,共26页
Coffee is highly appreciated as stimulant. Brazil is the first producer and second consumer in the world. Flower evocation triggered by environmental signals is essential for adaptability and productivity, and despite... Coffee is highly appreciated as stimulant. Brazil is the first producer and second consumer in the world. Flower evocation triggered by environmental signals is essential for adaptability and productivity, and despite that it is neglected and barely considered as a part of the reproductive cycle. Aiming to review molecular mechanisms producing phenological responses observed in the fields, orthologs to A. thaliana CO, FLC/FLM, FLT, SOC and VRN genes were identified in silico for C. arabica and its ancestors C. canephora and C. eugenioides. Protein structures and conserved domains, regulatory elements in promoters, and the related literature in both genera were accessed and compared. Hypotheses regarding Coffea spp. orthologs responsiveness to light and temperature signals at the tropics are proposed. Preliminary analysis of phenological data taken from early, intermediary and late C. arabica plants are included to illustrate the diversity regarding flower bud emission, which quite certainly is defined during flower evocation. 展开更多
关键词 Rubiaceae Café Biometeorology Climate Adaptability
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One New Iridoid Glycoside from Hedyotis tenelliflora 认领 引用 被引量：1
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作者 YUAN Qing-mei YANG Hong-wei +1 位作者 ZHAO Jing-feng LI Liang 《Chinese Herbal Medicines》 CAS 2011年第2期87-89,共3页
Objective To study the chemical constituents of Hedyotis tenelliflora.Methods The compounds were isolated by chromatographic separation technology.The structures were identified on the basis of chemical and spectral d... Objective To study the chemical constituents of Hedyotis tenelliflora.Methods The compounds were isolated by chromatographic separation technology.The structures were identified on the basis of chemical and spectral data.Results Four iridoid glycosides were isolated from the whole plant of H.tenelliflora.On the basis of the chemical and spectral methods,their structures were elucidated as teneoside C(1),harpagoside(2),harpagide(3),and asperulosidic acid(4).Conclusion Compound 1 is a new compound,and compounds 2 and 3 are isolated from H.tenelliflora for the first time. 展开更多
关键词 harpagoside Hedyotis tenelliflora iridoid glycoside Rubiaceae teneoside C
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Four New Indole Alkaloids from Neolamarckia cadamba 认领 引用
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作者 Lingli Liu Shifei Li +4 位作者 Qiang Zhang Feng Zhu Wei Yang Hongping He Xiaojiang Hao 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2013年第1期79-83,共5页
Phytochemical investigation on the leaves ofNeolamarckia cadamba led to the isolation of four new indole al- kaloids, spirocadambine （1）, dehydraisodihydrocadambine （2）, nitrocadambines A and B （3 and 4）. The st... Phytochemical investigation on the leaves ofNeolamarckia cadamba led to the isolation of four new indole al- kaloids, spirocadambine （1）, dehydraisodihydrocadambine （2）, nitrocadambines A and B （3 and 4）. The structures and relative configurations were established by 1D and 2D NMR spectra. Spirocadambine （1） represents a new type of screw ring containing indole glucoalkaloids. 展开更多
关键词 Rubiaceae Neolamarckia cadamba indole alkaloids glucoalkaloids
Natural and unnatural anthraquinones isolated from the ethanol extract of the roots of Knoxia valerianoides 认领 引用 被引量：10
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作者 Feng Zhao Sujuan Wang +8 位作者 Sheng Lin Chenggen Zhu Zhenggang Yue Yang Yu Bo Liu Xiuli Wu Yongchun Yang Yan Li Jiangong Shi 《Acta Pharmaceutica Sinica B》 CAS 2012年第3期260-266,共7页
Eight new 9,10-anthraquinones(1-8)including three acetonide derivatives of 3-hydroxy-2-hydroxymethyl-9,10-anthraquinones(68)were isolated from an ethanol extract of the roots of Knoxia valeriamoides.On the basis of ch... Eight new 9,10-anthraquinones(1-8)including three acetonide derivatives of 3-hydroxy-2-hydroxymethyl-9,10-anthraquinones(68)were isolated from an ethanol extract of the roots of Knoxia valeriamoides.On the basis of chemical transformation reactions of the co-occurring 14 and 15 combined with HPLC-DAD-ESI-MS analysis of the extracts,the previously and newly isolated 2-methoxymethy-and 2-ethoxymethyl-9,10-anthraquinones(4,5,and 9-13),as well as the 3-hydroxy-2-hydroxymethyl-9,10-anthraquinone acetonide derivatives(68),were shown to be solvolytic artifacts.In the in vitro assays,compound 4 was active to protect hepatocyte(WB-F344)damage. 展开更多
关键词 Knoxia valerianoides Rubiaceae Anthraquinone Solvolytic artifacts HPLC-DAD-ESI-MS analysis Hepatocyte(WB-F344)damage protection
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27-Ald-triterpenoid saponins from Adina rubella 认领 引用 被引量：4
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作者 Fan, GJ He, ZS +1 位作者 Wu, HM Xu, JF 《Chinese Journal of Chemistry》 SCIE EI CAS 1997年第5期431-437,共7页
Four new triterpenoid saponins were isolated from the roots of Adina rubella Hance. They were characterized as adinaic acid 3 beta-O-[alpha-L-rhamnopyranosyl(1-->2)-beta-D-glucopyranosyl(1-->2)-beta-D-glucurono-... Four new triterpenoid saponins were isolated from the roots of Adina rubella Hance. They were characterized as adinaic acid 3 beta-O-[alpha-L-rhamnopyranosyl(1-->2)-beta-D-glucopyranosyl(1-->2)-beta-D-glucurono-pyranoside-6-O-methyl ester]-28-O-beta-D-glucopyranoside, adinaic acid 3 beta-O-[alpha-L-rhamnopyranosyl(1-->2)-beta-D-glucopyranosyl(1-->2)-beta-D-glucuronopyranoside-6-O-butyl ester]-28-O-beta-D-glucopyranoside, adinaic acid 3 beta-O-[beta-D-glucopyranosyl(1-->2)-beta-D-glucopyrnaosyl]-(28-->1)-beta-D-glucopyranosyl(1-->6)-beta-D-glucopyranosyl ester, 27-hydroxyursolic acid 3 beta-O-[alpha-L-rhamnopyranosyl (1-->2)-beta-D-glucopyranosyl(1-->2)-beta-D-glucuronopyranoside-6-O-methyl ester]-28-O-beta-D-glycopyranoside. Their structures were elucidated by spectral methods, especially with the aid of 2D NMR techniques. Their complete assignments of the H-1 and C-13 NMR signals were carried out. 展开更多
关键词 Adina rubella Hance Rubiaceae adinaic acid glycosides 27-ald-terpenoids
27-Nor-triterpenoid saponins from Adina rubella 认领 引用 被引量：2
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作者 樊高骏 何直升 《Chinese Journal of Chemistry》 SCIE CAS 1998年第5期442-447,共6页
Three new 27-nor-triterpenoid saponins named rubenorside A (l), rubenorside B (2) and rubenorside C (9) were isolated from the roots of Adina rubella. Their structures were characterized as pyrocincholic acid 3β-O-α... Three new 27-nor-triterpenoid saponins named rubenorside A (l), rubenorside B (2) and rubenorside C (9) were isolated from the roots of Adina rubella. Their structures were characterized as pyrocincholic acid 3β-O-α-L-rhamnopyranosyl(28→ 1)-β-D-glucopyranosyl ester (1), pyrocincholic acid 3β-O-β-D-glucopyranosyl(1→2)-β-D-fucopyranosyl(28→1)-β-D-glucopyranosyl(1→6)-β-D-glucopyranosyl ester (2) and pyrocincholic acid 3β-O-β-D-glucopyranosyl(1→2)-β-D-glucopyranosyl (28→ 1)-β-D-glucopyranosyl( 1→6)-β-D-glucopyranosyl ester (S) by spectral methods, especially 2D NMR experiments. 展开更多
关键词 Adina rubella Rubiaceae saponins
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