Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 27
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
2.
J Asian Nat Prod Res ; 25(2): 156-162, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-35616229

RESUMO

Two new sesquiterpenoids, flammupin A (1) and flammupin B (2), along with two known compounds, enokipodin C (3) and 5,5'-dibuthoxy-2,2'-bifuran (4) were obtained from Flammulina velutipes, an endophytic fungus isolated from the roots of Caulophyllum robustum Maxim. The structures were elucidated by the combination of HR-ESI-MS, NMR, and ECD analyses. Compound 3 exhibited moderate to potent cytotoxicity against A549, HeLa, and SMMC-7721 cells with IC50 values ranged from 3.69 to 11.84 µM.


Assuntos
Flammulina , Sesquiterpenos , Humanos , Sesquiterpenos/química , Células HeLa
3.
Zootaxa ; 5360(1): 82-90, 2023 Oct 25.
Artigo em Inglês | MEDLINE | ID: mdl-38220623

RESUMO

Three new species of Nazeris Fauvel, 1873 from the Jiuwan Mountain, Guangxi, China, are described and illustrated: N. jiuwanensis, sp. n., N. qingshuius, sp. n. and N. yangmeius sp. n. An identification key to the Nazeris species in Guangxi is provided.


Assuntos
Besouros , Animais , China
4.
Zootaxa ; 5369(1): 131-145, 2023 Nov 08.
Artigo em Inglês | MEDLINE | ID: mdl-38220722

RESUMO

Nine species of Nazeris Fauvel are reported from Xizang, China. Seven of them are described as new: N. mirabilis sp. n., N. dinggyensis sp. n., N. jifuensis sp. n., N. wenxuani sp. n., N. gladius sp. n., N. gyirongensis sp. n. and N. yadongensis sp. n. An identification key to the Nazeris species in Xizang and a map showing their distribution are provided.


Assuntos
Besouros , Animais , China , Distribuição Animal
5.
Zootaxa ; 5138(1): 41-53, 2022 May 16.
Artigo em Inglês | MEDLINE | ID: mdl-36101039

RESUMO

Seven species of Nazeris Fauvel, 1873 are reported for Guizhou, China. All of them are described as new: N. ingentis Lin, Yu Hu, sp. n., N. resimus Lin, Yu Hu, sp. n., N. leigongensis Lin, Yu Hu, sp. n., N. yujiei Lin, Yu Hu, sp. n., N. muricatus Lin, Yu Hu, sp. n., N. excertus Lin, Yu Hu, sp. n. and N. serratus Lin, Yu Hu, sp. n.


Assuntos
Besouros , Animais , China
6.
Chem Pharm Bull (Tokyo) ; 70(4): 283-285, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35370205

RESUMO

A novel alkaloid caulophyine A (1) was isolated from the roots of Caulophyllum robustum Maxim., along with six known alkaloids 2-7. The structure of 1 was elucidated by extensive NMR and high resolution-time-of-flight (HR-TOF)-MS analyses, it is a rare nitrogen containing polycyclic aromatic hydrocarbon. The in vitro bioassays revealed that 2 presented remarkable cytotoxicity against A549 with an IC50 value of 3.83 µM in comparison with the positive control etoposide (IC50 = 11.63 µM). Compounds 1 and 2 also displayed weak Acetylcholinesterase (AChE) inhibitory activity with IC50 values of 123.03 and 80.74 µM respectively.


Assuntos
Alcaloides , Caulophyllum , Acetilcolinesterase/metabolismo , Alcaloides/química , Caulophyllum/química , Estrutura Molecular , Raízes de Plantas/química
7.
Chem Biodivers ; 19(4): e202100946, 2022 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-35253972

RESUMO

We identified two new diterpenoidal acrocalyenes A (1) and B (2) through chemical investigation on Acrocalymma sp., a plant-associated fungus from the tender stem isolates of Sinomenium acutum collected from the Qinling Mountains, along with seven already-recognized compounds (3-9). The HR-ESI-TOF-MS and 1D/2D NMR data were utilized for structural elucidation of these compounds, and the single-crystal X-ray diffraction was employed for absolute configuration clarification of the novel acrocalyenes 1 and 2. Bioassays revealed that the cytotoxicities of compounds 2, 4, 6, 7, and 8 against three human carcinoma cells (RKO, HeLa and HCC-1806) were moderate to strong, with IC50 between 6.70-38.82 µM. These isolates were also evaluated for their fungal resistant potentials against Botrytis cinerea, Fusarium culmorum and Fusarium solani, in which 3 displayed significant inhibitory effects on all three phytopathogenic fungi, showing respective MIC of 50, 25 and 25 µM.


Assuntos
Ascomicetos , Carcinoma Hepatocelular , Diterpenos , Neoplasias Hepáticas , Antifúngicos/química , Antifúngicos/farmacologia , Ascomicetos/química , Diterpenos/química , Diterpenos/farmacologia , Humanos , Sinomenium
8.
Zootaxa ; 5016(4): 579-587, 2021 Aug 09.
Artigo em Inglês | MEDLINE | ID: mdl-34810428

RESUMO

Three new species of Nazeris Fauvel, 1873 from the Dayao Mountains, Guangxi, China, are described and illustrated: N. shengtangus Ma, Miao Hu, sp. n., N. songi Ma, Miao Hu, sp. n., and N. curvilaminatus Ma, Miao Hu, sp. n. An identification key to the Nazeris species in Guangxi, and a map showing their distribution are provided.


Assuntos
Besouros , Distribuição Animal , Animais , China
9.
Zootaxa ; 5032(2): 290-294, 2021 Sep 07.
Artigo em Inglês | MEDLINE | ID: mdl-34811126

RESUMO

Two species of Anchocerus Fauvel are reported from China, one of them described as new: A. wenxuani Lin Hu, sp. n. (Guangxi). Anchocerus giganteus Hu, Li Zhao, 2010 is newly recorded from Shanghai, Jiangxi, Guangxi and Guangdong. A map showing the distribution of all Chinese species is provided.


Assuntos
Besouros , Animais , China
10.
Zookeys ; 1059: 117-133, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34594151

RESUMO

Fourteen species of Nazeris Fauvel, 1873 are reported for the Nanling Mountain Range, China. Four of them are described as new: N.xingmini Lin & Hu, sp. nov. (Guangdong, Jiangxi), N.huaiweni Lin & Hu, sp. nov. (Guangdong), N.meihuaae Lin & Hu, sp. nov. (Guangdong, Jiangxi) and N.lichongi Lin & Hu, sp. nov. (Hunan). An identification key to the Nazeris species reported for the Nanling Mountains, and a map showing their distribution are provided.

11.
Zootaxa ; 4985(3): 447450, 2021 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-34186795

RESUMO

N/A.


Assuntos
Besouros/classificação , Animais , China
12.
Zootaxa ; 4896(2): zootaxa.4896.2.8, 2020 Dec 21.
Artigo em Inglês | MEDLINE | ID: mdl-33756868

RESUMO

A new species of Nazeris Fauvel, 1873 from Anhui, China, is described and illustrated: N. yaoluopingus, sp. n. Additional records of N. cultellatus Assing, 2013, an identification key to the Nazeris species in Anhui and a map showing their distribution are provided.


Assuntos
Besouros , Distribuição Animal , Animais , China
13.
Zootaxa ; 4543(3): 431-441, 2019 Jan 07.
Artigo em Inglês | MEDLINE | ID: mdl-30647299

RESUMO

Six species of Nazeris Fauvel are reported for Guangxi, China. Five of them are described as new: N. maoershanus Hu Qiao, sp. n., N. rugosus Hu Qiao, sp. n., N. yuyimingi Hu Qiao, sp. n., N. biacuminatus Hu Qiao, sp. n., and N. yanzhuqii Hu Qiao, sp. n. Additional records of N. latilobatus Assing, 2016 and an identification key to the Nazeris species in Guangxi are provided.


Assuntos
Besouros , Animais , China
14.
Zootaxa ; 4429(1): 173-180, 2018 Jun 05.
Artigo em Inglês | MEDLINE | ID: mdl-30313287

RESUMO

Four species of Nazeris Fauvel are reported from Guangdong and Hunan, China, with three of them described as new: N. rubidus Hu, Luo Li, sp. n., N. nanlingensis Hu, Luo Li, sp. n., and N. gaoleii Hu, Luo Li, sp. n. Nazeris inaequalis Assing, 2014 is newly recorded from Guangdong Province.


Assuntos
Besouros , Animais , China
15.
Zootaxa ; 4370(2): 180-188, 2018 Jan 09.
Artigo em Inglês | MEDLINE | ID: mdl-29689864

RESUMO

Six species of the genus Nazeris Fauvel, 1873 are recorded in the Luoxiao Mountain Range, China. Two of them are described: N. yipingae sp. n. and N. jiaweii sp. n. Nazeris xiaobini Hu Li, 2015 and N. rufus Hu Li, 2015 are newly recorded from Hubei Province. An identification key to the Nazeris species in this area and a map showing their distribution are given.


Assuntos
Besouros , Distribuição Animal , Animais , China
16.
Bioorg Med Chem Lett ; 28(3): 515-518, 2018 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-29295796

RESUMO

Four new diphenyl ether derivatives, sinopestalotiollides A-D (1-4), one new natural α-pyrone product (11), as well as twelve known compounds (5-1 7), were obtained from the ethyl acetate extract of the endophytic fungus Pestalotiopsis palmarum isolated from the leaves of medicinal plant Sinomenium acutum (Thunb.) Rehd et Wils. The structures were elucidated by HR-ESI-MS and NMR spectrometry data. Bioassay experiments revealed that compounds 1-4 and 11 exhibited strong to weak cytotoxicities against three human tumor cell lines Hela, HCT116 and A549.


Assuntos
Antineoplásicos/farmacologia , Éteres Fenílicos/farmacologia , Xylariales/química , Células A549 , Antineoplásicos/química , Antineoplásicos/isolamento & purificação , Proliferação de Células/efeitos dos fármacos , Relação Dose-Resposta a Droga , Ensaios de Seleção de Medicamentos Antitumorais , Células HCT116 , Células HeLa , Humanos , Estrutura Molecular , Éteres Fenílicos/química , Éteres Fenílicos/isolamento & purificação , Sinomenium/microbiologia , Relação Estrutura-Atividade
17.
Zootaxa ; 4531(1): 147-150, 2018 Dec 11.
Artigo em Inglês | MEDLINE | ID: mdl-30651459

RESUMO

A new species of Nazeris Fauvel, 1873 from Xizang, China, is described and illustrated: N. zhifeii Hu Pan, sp. n. A key to Nazeris species in Xizang and a map showing their distribution are given.


Assuntos
Besouros , Distribuição Animal , Animais , China
18.
Zootaxa ; 4175(5): 473-479, 2016 Oct 17.
Artigo em Inglês | MEDLINE | ID: mdl-27811755

RESUMO

The paederine genus Nazeris Fauvel, 1873 previously included 241 described species and seven subspecies (Assing, 2016). As many as 49 species have been recorded from the Himalaya (Assing, 2014). In China, Yunnan has the greatest diversity of Nazeris (45 species). Xizang is the second largest province of China, and adjacent to Yunnan and the Himalaya. But only two Nazeris species have been described from this area: N. motuensis Hu, Li & Zhao, 2008 and N. tangi Hu, Li & Zhao, 2008. Both of them were found in eastern Xizang. Three additional species in the insect collection of the Shanghai Normal University are described in this paper.


Assuntos
Besouros/anatomia & histologia , Besouros/classificação , Animais , China , Feminino , Masculino , Especificidade da Espécie
19.
Zootaxa ; 4169(2): 361-373, 2016 Sep 20.
Artigo em Inglês | MEDLINE | ID: mdl-27701301

RESUMO

Twelve species of Nazeris Fauvel, 1873 are recorded from Zhejiang, China. Three of them are described as new: N. gutianensis Hu & Li, sp. n., N. zhaotiexiongi Hu & Li, sp. n., and N. zhangsujiongi Hu & Li, sp. n. Two synonymies are proposed: N. minor Koch, 1939 = N. nigritulus Hu, Li & Zhao, 2011, syn. n.; N. chinensis Koch, 1939 = N. tianmuensis Hu, Li & Zhao, 2011, syn. n. Nazeris sadanarii Hu & Li, 2010 is newly recorded from Zhejiang.


Assuntos
Besouros/classificação , Distribuição Animal , Estruturas Animais/anatomia & histologia , Estruturas Animais/crescimento & desenvolvimento , Animais , Tamanho Corporal , China , Besouros/anatomia & histologia , Besouros/crescimento & desenvolvimento , Ecossistema , Feminino , Masculino , Tamanho do Órgão
20.
Zootaxa ; 4138(2): 373-80, 2016 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-27470770

RESUMO

Two new species of the genus Stilicoderus Sharp, 1889 from China are described and illustrated: S. maolini sp. nov. (Jiangxi, Hunan) of the S. variolosus group and S. chengrani sp. nov. (Xizang) of the S. signatus group. Additional records of eleven described species of Stilicoderus are given.


Assuntos
Besouros/classificação , Distribuição Animal , Estruturas Animais/anatomia & histologia , Estruturas Animais/crescimento & desenvolvimento , Animais , Tamanho Corporal , China , Besouros/anatomia & histologia , Besouros/crescimento & desenvolvimento , Feminino , Masculino , Tamanho do Órgão
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...