Two new compounds, 5-hydro-N-methylcorydalidine (1) and 1-(4-methoxybenzyl)-2-N-methyl-6-hydroxyl-5, 7-dimethoxy-isoquinoline (2), together with seven known ones (3-9) were isolated from the chloroform extract of the ...Two new compounds, 5-hydro-N-methylcorydalidine (1) and 1-(4-methoxybenzyl)-2-N-methyl-6-hydroxyl-5, 7-dimethoxy-isoquinoline (2), together with seven known ones (3-9) were isolated from the chloroform extract of the herb Thalictrum delavayi Franch., among which compound 7 was firstly obtained from the genus Thalictrum. Their structures were elucidated on the basis of spectroscopic evidence including HMQC and HMBC experiments.展开更多
A new iridoid was isolated from the 80% ethanol extract of the whole plant of Incarvillea delavayi. Its structure was defined, and named incarvillic acid, on the basis of spectral evidences.
A new monoterpene glycoside named paeonivayin with other seven known compounds were isolated from the roots of Paeonia delavayi Franch. and their structures were determined by means of spectroscopic studies.
Further phytochemical investigation of the unique C 18-norditerpenoid alkaloids from the roots ofAconitum delavayi Franch led to the isolation of two new norditerpenoid alkaloids, delavaconitine F 1 and delavaconitine...Further phytochemical investigation of the unique C 18-norditerpenoid alkaloids from the roots ofAconitum delavayi Franch led to the isolation of two new norditerpenoid alkaloids, delavaconitine F 1 and delavaconitine G 2. Their structures were determined from spectroscopic evidence.展开更多
A new triterpenoid. 3 beta. 4 beta. 23-trihydroxy-24, 30-dinorolean-12. 20(29)-dien-28-oic acid. together with five known compounds. 2 alpha. 3 beta. 23-trihydroxy-12-oleanen-28-oic acid-beta -D-glucose glucopyranosyl...A new triterpenoid. 3 beta. 4 beta. 23-trihydroxy-24, 30-dinorolean-12. 20(29)-dien-28-oic acid. together with five known compounds. 2 alpha. 3 beta. 23-trihydroxy-12-oleanen-28-oic acid-beta -D-glucose glucopyranosyl ester. palbinone. 2-hydroxy-benzoic acid, vanillic acid. syringic acid. were isolated from the roots of Paeonia delavayi Franch. Their structures were characterized by spectral analysis.展开更多
To explore differences in leaf morphology between Sapindus mukorossi and Sapindus delavayi,and how the environment might drive these differences,80 germplasm samples from the Sapindus germplasm nursery in Fujian Provi...To explore differences in leaf morphology between Sapindus mukorossi and Sapindus delavayi,and how the environment might drive these differences,80 germplasm samples from the Sapindus germplasm nursery in Fujian Province were selected.The study revealed a wide variation and diversity in 16 germplasm traits,both within and between species grown under the same conditions.On average,the relative contribution of intraspecific variability to total variability was more important(83%) than the relative contribution of interspecific variability(17%).PERMANOVA analysis showed differences in leaflet thickness,length,perimeter,length to width ratio,and leaf hairs or trichome density.Correlation analyses between leaf morphological traits and environmental variables indicated that leaves tended to be larger,longer,and thicker in wetter,warmer,and low-altitude conditions.Our analysis of the relationship between climate and leaf morphology revealed that S.mukorossi had a greater sensitivity to climate variation,particularly in response to mean temperatures of the coldest and warmest seasons,which led to differences in leaf traits and the distribution of the two species.These findings contribute to the understanding of leaf morphology variations in S.mukorossi and S.delavayi,and provide a basis for the collection of Sapindus germplasm resources,their cultivation and use to help address climate change.展开更多
The traditional medicinal plant,and endangered species Aristolochia delavayi(Aristolochiaceae)is an endemic species in China and occurs in the warm and dry areas along the Jinsha river.It is also a specific host of th...The traditional medicinal plant,and endangered species Aristolochia delavayi(Aristolochiaceae)is an endemic species in China and occurs in the warm and dry areas along the Jinsha river.It is also a specific host of the larvae of Byasa daemonius,a vulnerable butterfly.In this study,15 pairs of polymorphic microsatellite primers of A.delavayi were designed and screened based on the Simple Sequence Repeats(SSR)loci found by using the results of genome skimming.Based on these 15 SSR markers,the genetic diversity and structure of 193 individuals from ten natural populations were analyzed in detail.In comparison to other endemic and endangered plants in the region,the population of A.delavayi possess a relatively high genetic diversity(He=0.550,I=1.112).AMOVA analysis showed that 68.4%of the total genetic diversity was within populations and 31.6%of the variation occurred among populations.There was a significant genetic differentiation among natural populations of A.delavayi detectable,with low gene flow(Nm=0.591).This might be attributed to geographical barriers and limited seed dispersal.To test the isolation by distance(IBD),we performed Mantel test,which showed a significant correlation between the geographic and genetic distances.In order to cope with the possible biases caused by IBD,we additionally performed Bayesian genetic cluster analyses and principal coordinate analysis(PCoA).The final cluster analysis revealed three groups with distinct geographical distribution.Habitat fragmentation and limited gene flow between these populations may be the main reasons for the current genetic structure.For conservation of this species,we suggest to divide its populations into three protection management units,with subsequent focus on the Yongsheng and Luquan populations which experienced a genetic bottleneck event in the past.展开更多
A new sesquiterpenoid was obstained from the leaves of Magnolia delavayi. Its structure was determined as 8β-acetoxy-10α-ethyloxy-guaia-4α, 11-diol on the basis of spectral evidence.
One previously undescribed angeloylated noreudesmane sesquiterpenoid,dobinin O(1),along with four known eudesmane sesquiterpenoids(2-5)were isolated from the peeled roots of Dobinea delavayi.Their structures were eluc...One previously undescribed angeloylated noreudesmane sesquiterpenoid,dobinin O(1),along with four known eudesmane sesquiterpenoids(2-5)were isolated from the peeled roots of Dobinea delavayi.Their structures were elucidated by extensive spectroscopic data analyses.In addition,compound 1 exhibited moderate antimalarial activity against Plasmodium yoelii BY265RFP with the inhibition ratio of 17.8±13.3%at the dose of 30 mg/kg/day.展开更多
Paeonia delavayi is a wild tree peony species endemic to high-altitude regions in southwestern China.Recent agricultural land expansion,however,not only causes its dwindling population size,but also poses a severe thr...Paeonia delavayi is a wild tree peony species endemic to high-altitude regions in southwestern China.Recent agricultural land expansion,however,not only causes its dwindling population size,but also poses a severe threat to its long-term persistence.Since our knowledge of the reproductive biology of P.delavayi is very limited,and some management misconceptions have further exacerbated the already worrisome situation,the aim of the present study is to provide some scientific evidence regarding habitat preference and breeding system of P.delavayi,and to help correct some management misconceptions.Specifically,morphological traits of P.delavayi populations growing in two different habitats(i.e.,the open area versus forest understory),including basal stem diameter,plant height and flower numbers per plant,were measured and compared with each other.A range of floral manipulation experiments was further conducted to study the extent of self-compatibility and pollen limitation.The results showed that P.delavayi preferred the open habitat over forest understory as it generally grew bigger with thickerstems,and produced a higher number of flowers in the former habitat.Therefore,the open habitat should receive immediate priority for conservation action instead of being converted to agricultural land;also,P.delavayi is pollen limited,as evidenced by the fact that experimental flowers receiving supplemental non-self pollen generally displayed elevated seed production than flowers subjected to other treatments(e.g.,non-supplemental self pollen,non-supplemental non-self pollen and supplemental self pollen),which is consistent with reported observations that alpine plants are more likely to be pollen-limited than lowland plants.We suggest that human intervention might be necessary to guarantee the long-term persistence of P.delavayi as harsh alpine environment,intense competition for pollinators and different anthropogenic perturbations co-limit its reproductive success.展开更多
To search for pharmacologically active constituents of folk medicine, a new pregnane, 2α,3α,15β-trihydroxy-20（S）-tigloyl-pregnane （compound 1）, and nine known compounds, geranylgeraniol （compound 2）, β-dauco...To search for pharmacologically active constituents of folk medicine, a new pregnane, 2α,3α,15β-trihydroxy-20（S）-tigloyl-pregnane （compound 1）, and nine known compounds, geranylgeraniol （compound 2）, β-daucosterol （compound 3）, 6-hydroxystigmast-4oen-3-one （compound 4）, sitoindoside Ⅰ （compound 5）, sitoindoside Ⅱ （compound 6）, β-sitosterol （compound 7）, kaempferol （compound 8）, quercetin （compound 9）, and rutin （compound 10）, were isolated from the ethanol extract of whole plants of Munronia delavayi Franch using chromatographic methods. The structures of compounds 1-10 were elucidated on the basis of spectral data.展开更多
A tetranortriterpenoid, named munronin G, was isolated from Munronia delavayi （Meliaceae） by chromatography. Its structure was determined on the basis of 1D-, 2D-NMR and mass spectral analyses.
文摘Two new compounds, 5-hydro-N-methylcorydalidine (1) and 1-(4-methoxybenzyl)-2-N-methyl-6-hydroxyl-5, 7-dimethoxy-isoquinoline (2), together with seven known ones (3-9) were isolated from the chloroform extract of the herb Thalictrum delavayi Franch., among which compound 7 was firstly obtained from the genus Thalictrum. Their structures were elucidated on the basis of spectroscopic evidence including HMQC and HMBC experiments.
文摘A new iridoid was isolated from the 80% ethanol extract of the whole plant of Incarvillea delavayi. Its structure was defined, and named incarvillic acid, on the basis of spectral evidences.
文摘A new monoterpene glycoside named paeonivayin with other seven known compounds were isolated from the roots of Paeonia delavayi Franch. and their structures were determined by means of spectroscopic studies.
基金the National Natural Science Foundation of China （No. 90409015）.
文摘Further phytochemical investigation of the unique C 18-norditerpenoid alkaloids from the roots ofAconitum delavayi Franch led to the isolation of two new norditerpenoid alkaloids, delavaconitine F 1 and delavaconitine G 2. Their structures were determined from spectroscopic evidence.
文摘A new triterpenoid. 3 beta. 4 beta. 23-trihydroxy-24, 30-dinorolean-12. 20(29)-dien-28-oic acid. together with five known compounds. 2 alpha. 3 beta. 23-trihydroxy-12-oleanen-28-oic acid-beta -D-glucose glucopyranosyl ester. palbinone. 2-hydroxy-benzoic acid, vanillic acid. syringic acid. were isolated from the roots of Paeonia delavayi Franch. Their structures were characterized by spectral analysis.
基金supported by the Fundamental Research Funds for the Central Universities of China (2015ZCQLX-02 2017-LYSJWJ-1)。
文摘To explore differences in leaf morphology between Sapindus mukorossi and Sapindus delavayi,and how the environment might drive these differences,80 germplasm samples from the Sapindus germplasm nursery in Fujian Province were selected.The study revealed a wide variation and diversity in 16 germplasm traits,both within and between species grown under the same conditions.On average,the relative contribution of intraspecific variability to total variability was more important(83%) than the relative contribution of interspecific variability(17%).PERMANOVA analysis showed differences in leaflet thickness,length,perimeter,length to width ratio,and leaf hairs or trichome density.Correlation analyses between leaf morphological traits and environmental variables indicated that leaves tended to be larger,longer,and thicker in wetter,warmer,and low-altitude conditions.Our analysis of the relationship between climate and leaf morphology revealed that S.mukorossi had a greater sensitivity to climate variation,particularly in response to mean temperatures of the coldest and warmest seasons,which led to differences in leaf traits and the distribution of the two species.These findings contribute to the understanding of leaf morphology variations in S.mukorossi and S.delavayi,and provide a basis for the collection of Sapindus germplasm resources,their cultivation and use to help address climate change.
基金Support for this study was provided by grants from the NSFC(National Natural Science Foundation of China)-Yunnan Joint fund to support key projects(No.U1602264)Yunnan Ten Thousand Talents Plan Young&Elite Talent Project to G.Chen(YNWR-QNBJ-2018-017)+2 种基金NSFC(National Natural Science Foundation of China)(No.31660057)Y.P.GengScience&Technology Basic Resources Investigation Program of China for Survey and Germplasm Conservation of PSESP in Southwest China(2017FY100100)to W.B.Sun.
文摘The traditional medicinal plant,and endangered species Aristolochia delavayi(Aristolochiaceae)is an endemic species in China and occurs in the warm and dry areas along the Jinsha river.It is also a specific host of the larvae of Byasa daemonius,a vulnerable butterfly.In this study,15 pairs of polymorphic microsatellite primers of A.delavayi were designed and screened based on the Simple Sequence Repeats(SSR)loci found by using the results of genome skimming.Based on these 15 SSR markers,the genetic diversity and structure of 193 individuals from ten natural populations were analyzed in detail.In comparison to other endemic and endangered plants in the region,the population of A.delavayi possess a relatively high genetic diversity(He=0.550,I=1.112).AMOVA analysis showed that 68.4%of the total genetic diversity was within populations and 31.6%of the variation occurred among populations.There was a significant genetic differentiation among natural populations of A.delavayi detectable,with low gene flow(Nm=0.591).This might be attributed to geographical barriers and limited seed dispersal.To test the isolation by distance(IBD),we performed Mantel test,which showed a significant correlation between the geographic and genetic distances.In order to cope with the possible biases caused by IBD,we additionally performed Bayesian genetic cluster analyses and principal coordinate analysis(PCoA).The final cluster analysis revealed three groups with distinct geographical distribution.Habitat fragmentation and limited gene flow between these populations may be the main reasons for the current genetic structure.For conservation of this species,we suggest to divide its populations into three protection management units,with subsequent focus on the Yongsheng and Luquan populations which experienced a genetic bottleneck event in the past.
文摘A new sesquiterpenoid was obstained from the leaves of Magnolia delavayi. Its structure was determined as 8β-acetoxy-10α-ethyloxy-guaia-4α, 11-diol on the basis of spectral evidence.
基金supported by the National Natural Science Foundation of China(Nos.81960637 and 81460532)the Innovation Team Project of Dali University for the Development and Utilization of Characteristic Medicinal Plants in Western Yunnan&Bai Nationality Medicines(No.ZKLX2019106).
文摘One previously undescribed angeloylated noreudesmane sesquiterpenoid,dobinin O(1),along with four known eudesmane sesquiterpenoids(2-5)were isolated from the peeled roots of Dobinea delavayi.Their structures were elucidated by extensive spectroscopic data analyses.In addition,compound 1 exhibited moderate antimalarial activity against Plasmodium yoelii BY265RFP with the inhibition ratio of 17.8±13.3%at the dose of 30 mg/kg/day.
基金supported by China Special Fund for Forest Scientific Research in the Public Welfare (201204110)the National Natural Science Foundation of China (31460158)the Middle Aged Academic and Technical Leader Project of Yunnan Province (2010CI016)
文摘Paeonia delavayi is a wild tree peony species endemic to high-altitude regions in southwestern China.Recent agricultural land expansion,however,not only causes its dwindling population size,but also poses a severe threat to its long-term persistence.Since our knowledge of the reproductive biology of P.delavayi is very limited,and some management misconceptions have further exacerbated the already worrisome situation,the aim of the present study is to provide some scientific evidence regarding habitat preference and breeding system of P.delavayi,and to help correct some management misconceptions.Specifically,morphological traits of P.delavayi populations growing in two different habitats(i.e.,the open area versus forest understory),including basal stem diameter,plant height and flower numbers per plant,were measured and compared with each other.A range of floral manipulation experiments was further conducted to study the extent of self-compatibility and pollen limitation.The results showed that P.delavayi preferred the open habitat over forest understory as it generally grew bigger with thickerstems,and produced a higher number of flowers in the former habitat.Therefore,the open habitat should receive immediate priority for conservation action instead of being converted to agricultural land;also,P.delavayi is pollen limited,as evidenced by the fact that experimental flowers receiving supplemental non-self pollen generally displayed elevated seed production than flowers subjected to other treatments(e.g.,non-supplemental self pollen,non-supplemental non-self pollen and supplemental self pollen),which is consistent with reported observations that alpine plants are more likely to be pollen-limited than lowland plants.We suggest that human intervention might be necessary to guarantee the long-term persistence of P.delavayi as harsh alpine environment,intense competition for pollinators and different anthropogenic perturbations co-limit its reproductive success.
文摘To search for pharmacologically active constituents of folk medicine, a new pregnane, 2α,3α,15β-trihydroxy-20（S）-tigloyl-pregnane （compound 1）, and nine known compounds, geranylgeraniol （compound 2）, β-daucosterol （compound 3）, 6-hydroxystigmast-4oen-3-one （compound 4）, sitoindoside Ⅰ （compound 5）, sitoindoside Ⅱ （compound 6）, β-sitosterol （compound 7）, kaempferol （compound 8）, quercetin （compound 9）, and rutin （compound 10）, were isolated from the ethanol extract of whole plants of Munronia delavayi Franch using chromatographic methods. The structures of compounds 1-10 were elucidated on the basis of spectral data.
基金Project supported by the National Natural Science Foundation of China （No. 30370160）.Acknowledgements The authors are grateful to Mr. Xie Li-Shan （Kunming Institute of Botany, the Chinese Academy of Sciences） for collection and identification of the specimens, and members of the analytical group of the State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, for the spectral measurements.
文摘A tetranortriterpenoid, named munronin G, was isolated from Munronia delavayi （Meliaceae） by chromatography. Its structure was determined on the basis of 1D-, 2D-NMR and mass spectral analyses.
