Journal ArticleDOI
Chemical constituents from Piper wallichii
Yan-Ni Shi,Lian Yang,Jin-Hua Zhao,Yi-Ming Shi,Yan Qu,Hong-Tao Zhu,Dong Wang,Chong-Ren Yang,Xing-Cong Li,Min Xu,Ying-Jun Zhang +10 more
TLDR
Fifteen known compounds including four triterpenoids, one sterol, one diketopiperazine alkaloid and nine phenolics were isolated from the stems of Piper wallichii and the structure of compound 1 was fully assigned by 1D and 2D NMR experiments for the first time.About:
This article is published in Natural Product Research.The article was published on 2015-01-09. It has received 22 citations till now.read more
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Antifungal Amide Alkaloids from the Aerial Parts of Piper flaviflorum and Piper sarmentosum.
Yan-Ni Shi,Fang-Fang Liu,Fang-Fang Liu,Melissa R. Jacob,Xing-Cong Li,Hong-Tao Zhu,Dong Wang,Rong-Rong Cheng,Chong-Ren Yang,Min Xu,Ying-Jun Zhang +10 more
TL;DR: Sixty-three amide alkaloids, including three new, piperflaviflorine A, p Piper flaviflorum and Piper sarmentosum, and two previously synthesized ones, (1E,3S)-1-cinnamoyl-3- hydroxypyrrolidine and N-[7'-(4'-methoxyphenyl)ethyl]-2-methoxybenzamide (5), were isolated from the aerial
Journal ArticleDOI
Alkylated Salicylaldehydes and Prenylated Indole Alkaloids from the Endolichenic Fungus Aspergillus chevalieri and Their Bioactivities.
Li-Bin Lin,Yu-Qi Gao,Rui Han,Jian Xiao,Yi-Meng Wang,Qiang Zhang,Yi-Jie Zhai,Wen-Bo Han,Wenli Li,Jin-Ming Gao +9 more
TL;DR: In this paper, asperglaucins A and B (1 and 2) and neoechinulin F (8) were separated from the endolichenic fungus Aspergillus chevalieri SQ-8.
Journal ArticleDOI
Amides and neolignans from the aerial parts of Piper bonii.
Duo-Duo Ding,Yue-Hu Wang,Ya-Hui Chen,Ren-Qiang Mei,Jun Yang,Ji-Feng Luo,Yan Li,Chunlin Long,Chunlin Long,Yi Kong +9 more
TL;DR: The structures of p Piperbonamides A-F and piperbonins A-C were elucidated based on the analysis of 1D and 2D NMR and MS data and showed weak activity against platelet aggregation.
Journal ArticleDOI
A new tigliane-type diterpene from Euphorbia dracunculoides Lam
TL;DR: This is the first isolation of 8-hydroperoxy tigliane diterpene from the genus of Euphorbia, and all compounds were evaluated for their antifungal activities.
References
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Journal ArticleDOI
Alkene Dihydroxylation with Malonoyl Peroxides: Catalysis Using Fluorinated Alcohols
TL;DR: Addition of perfluoro-tert-butyl alcohol to a toluene solution of alkene and peroxide increases the rate of product formation and the stereoselectivity observed, providing a simple and effective method for acceleration of this important class of reaction.
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Dibenzofuran phytoalexins from the sapwood tissue of Photinia, Pyracantha and Crataegus species
TL;DR: Fungus-challenged sapwood of Photinia davidiana and Pyracantha coccinea produced two new dibenzofuran phytoalexins, 7-methoxyeriobofuran and 9-hydroxyeriob ofuran, respectively, which are comparable with those of the cotonefurans.
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Flavan-3-ol gallates and proanthocyanidins from Pithecellobium lobatum
TL;DR: In this article, a chemical examination of the leaves of Pithecellobium lobatum has led to the isolation and characterization of five flavan-3-ol derivatives including new flavan 3-ol gallates, gallocatechin 3′- and 4′-O-gallates and gallocatech 7,3′-and 7,4′-di-Ogallates (almost racemic), which occur as equilibrium mixtures.
Journal ArticleDOI
Triterpenoids from Sanguisorba alpina
TL;DR: The roots of Sanguisorba alpina yielded 18 compounds of which five were novel, including four triterpenoid saponins and one new triterphenoid acid.
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Ursolic acid analogues: non-phenolic functional food components in Jamaican raspberry fruits
TL;DR: Inhibition of cell proliferation by these compounds were determined by using MCF-7 (breast), SF-268 (CNS), NCI H460 (lung), HCT-116 (colon) and AGS (gastric) human tumour cells and testing for anti-inflammatory activity using in vitro cycloxegenase-1 (COX-1) and cycloxEGen enzyme inhibitory assays.