Results 11 to 20 of about 329 (142)

Stereostructure of Picrasin A, Simaroubolide of Picrasma quassioides [PDF]

Chemical and Pharmaceutical Bulletin, 1970
Abstract From the Japanese quassia tree, Picrasma quassioides (Simaroubaceae), new bitter principles (simaroubolides), picrasin A, B, C, D, E, F and G have been isolated whose stereostructures have been elucidated on the basis of chemical and physical evidence.
HIKINO, HIROSHI, OHTA, TOMIHISA, TAKEMOTO, TSUNEMATSU   +2 more
core   +19 more sources

Phytochemistry, Traditional Use and Pharmacological Activity of Picrasma quassioides: A Critical Reviews. [PDF]

Nutrients, 2020
Picrasma quassioides is a member of the Simaroubaceae family commonly grown in the regions of Asia, the Himalayas, and India and has been used as a traditional herbal medicine to treat various illnesses such as fever, gastric discomfort, and pediculosis. This study aims to critically review the presence of phytochemicals in P. quassioides and correlate
Mohd Jamil MDH, Taher M, Susanti D, Rahman MA, Zakaria ZA.   +4 more
europepmc   +7 more sources

Research on Anti-inflammatory Targets and Mechanisms of alkaloids in Picrasma quassioides Benn Through Network Pharmacology [PDF]

Brazilian Journal of Pharmaceutical Sciences, 2023
This study aimed to investigate the molecular mechanism of Picrasma quassioides Benn against inflammation by means of network pharmacology. The paper will provide a reference for multi-target and multi-channel treatment of inflammation with traditional ...
Qijia Xu, Kai Wang, Yaoyao Xu, Yinhe Gao, Ge Wang, Sheng Liu, Feng Zhao   +6 more
doaj   +3 more sources

Chemical constituents from the twigs and leaves of Picrasma quassioides [PDF]

Journal of Asian Natural Products Research, 2023
Two new compounds, including a norsesquiterpenoid, annuionone H (1), and a quassinoid, picraqualide G (2), along with eleven known compounds (3–13), were isolated from the twigs and leaves of Picrasma quassioides. Comprehensive spectroscopic analyses and NMR calculation with DP4+ analysis were used to identify their structures.
Ya-Ling, Zhou, De-Wen, Bi, Xiao-Rong, Sun, Wen-Hui, Pang, Rui, Li, Xiong, Qiu, Rui-Han, Zhang, Xing-Jie, Zhang, Xiao-Li, Li, Wei-Lie, Xiao   +9 more
openaire   +3 more sources

Quassinoids from Picrasma quassioides and Their Neuroprotective Effects [PDF]

Journal of Natural Products, 2019
Quassinoids are a class of highly oxygenated degraded triterpenoids exclusively discovered from plants of the Simaroubaceae family. In this study, eight new (1-8) and 15 known quassinoids (9-23) were isolated from an extract of the stems of Picrasma quassioides.
Wen-Yu Zhao, Xiao-Yu Song, Lu Zhao, Chun-Xin Zou, Wei-Yu Zhou, Bin Lin, Guo-Dong Yao, Xiao-Xiao Huang, Shao-Jiang Song   +8 more
openaire   +3 more sources

A new ionone derivative from the leaves of Picrasma quassioides [PDF]

Journal of Asian Natural Products Research, 2018
Nigakialcohol A (1), as unusual cyclization ionone derivative, together with eight known ones (2–9), were isolated from the leaves of Picrasma quassioides (D. Don) Benn (Simaroubaceae). Their structures were elucidated by extensive spectroscopic analyses and comparison with literature data. Compound 2 showed a weak inhibitory effect on NO production at
Chang, Liu, Rong-Rong, Cheng, Zhu-Zhen, Han, Ying-Bo, Yang, Yue, Zhou, Li, Yang, Zheng-Tao, Wang   +6 more
openaire   +3 more sources

Picrasma quassioides (D.DON) Benn. Ethanolic Extract Improves Atopic Dermatitis and Hyperactivity Disorder in DNCB-Treated BALB/c Mice [PDF]

Applied Sciences, 2022
Atopic dermatitis (AD) is a chronic inflammatory skin disorder that can be associated with psychiatric disorders. Picrasma quassioides (D.Don) Benn (Gomokpi, GMP), a traditional medicinal herb, has been used to treat skin diseases, including AD.
Min-Jin Choi, Ly Thi Huong Nguyen, Heung-Mook Shin, In-Jun Yang   +3 more
doaj   +2 more sources

Picraquanines A－C, three new phenolic derivatives from the stems of Picrasma quassioides [PDF]

Natural Product Research, 2020
Three new phenolic derivatives, picraquanines A–C (1–3), along with 6 known ones 4–9 were obtained from the stems of Picrasma quassioides (D. Don) Benn. The new structures were determined by extensive spectroscopic data analysis, including IR, HRESIMS, 1H-NMR, 13C-NMR, HSQC, HMBC, 1H-1H COSY experiments.
Rui Xu, Dongdong Zhang, Fangfang Shu, Zehai Long, Yiming Li, Zhengtao Wang, Li Yang, Rui Wang   +7 more
openaire   +3 more sources

[Study on chemical constituents of Picrasma quassioides]. [PDF]

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 2011
To study the chemical constituents of Picrasma quassioides. The chemical constituents were isolated and purified by chromatographic methods over Sephadex LH-20 and silica gel column, and structurally elucidated by spectral analysis, including UV, IR, MS, 1H-NMR, 13C-NMR. Fourteen compounds were obtained and identified as trifolirhizin(1), maackiain(2),
Chenchen, Zhu, Guihua, Deng, Chaozhan, Lin   +2 more
openaire   +3 more sources

Cytotoxic Tirucallane and Apotirucallane Triterpenoids from the Stems of Picrasma quassioides [PDF]

Journal of Natural Products, 2016
Phytochemical investigation on the stems of Picrasma quassioides led to the isolation of a novel compound, picraquassin A (1), with an unprecedented 21,24-cycloapotirucallane skeleton, and four new apotirucallane-type triterpenoids (2-5), together with 15 new tirucallane-type triterpenoids (6-20) and 10 known tirucallane-type triterpenoids (21-30).
Jian, Xu, Di, Xiao, Qing-Hua, Lin, Jing-Feng, He, Wen-Yuan, Liu, Ning, Xie, Feng, Feng, Wei, Qu   +7 more
openaire   +3 more sources