Journal ArticleDOI
Structural and synthetic studies on the retrofractamides—amide constituents of Piper retrofractum
Avijit Banerji,Debabrata Bandyopadhyay,Manjusha Sarkar,Arup K. Siddhanta,Sudhir C. Pal,Somnath Ghosh,Koshy Abraham,James N. Shoolery +7 more
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TLDR
In this article, two unsaturated amides, retrofractamides A and C, were isolated from the total aboveground parts of Piper retroractum and were shown to be N -isobutyl-9(3′,4′-methylenedioxyphenyl)2 E,4 E,8 E -nonatrienamide from spectroscopic and chemical investigations.About:
This article is published in Phytochemistry.The article was published on 1985-02-05. It has received 42 citations till now. The article focuses on the topics: Piper retrofractum.read more
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New amides from the fruits of Piper retrofractum
TL;DR: Three new amides, (2E,14Z)-N-isobutyleicosa-2,14-dienamide (1), dipiperamides F and G (2 and 3), together with 30 known compounds were isolated from the fruits of Piper retrofractum by extensive spectroscopic analyses and a plausible biosynthetic pathway leading to the amides isolated is discussed.
Journal ArticleDOI
Lignans and neolignans from piperaceae
TL;DR: A review of lignans and neolignans currently known in the Piperaceae can be found in this paper, where the authors summarize the structures and properties of these genera.
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Vascular Epiphytic Medicinal Plants as Sources of Therapeutic Agents: Their Ethnopharmacological Uses, Chemical Composition, and Biological Activities.
TL;DR: This is an extensive review on epiphytic plants that have been used traditionally as medicines and their traditional medicinal uses, and their reported phytochemical properties and pharmacological properties aligned with their traditional uses.
Journal ArticleDOI
ACAT inhibition of alkamides identified in the fruits of Piper nigrum
Mun-Chual Rho,Seung Woong Lee,Hye Ran Park,Jung-Ho Choi,Ji Yun Kang,Koanhoi Kim,Hyun Sun Lee,Young-Kook Kim +7 more
TL;DR: Through a bioactivity-guided fractionation of MeOH extracts of the fruits of Piper nigrum, alkamide and five previously-identified alkamides were isolated and all inhibited cholesterol esterification in HepG2 cells.
Journal ArticleDOI
Evaluation of constituents of Piper retrofractum fruits on neurotrophic activity.
Miwa Kubo,Rina Ishii,Yoichi Ishino,Kenichi Harada,Nobuaki Matsui,Masaaki Akagi,Eishin Kato,Shinya Hosoda,Yoshiyasu Fukuyama +8 more
TL;DR: Three new compounds, 1-3, together with 22 known compounds, were isolated from the fruits of Piper retrofractum and found to enhance the neurite outgrowth of NGF-mediated PC12 cells at concentrations ranging from 0.1 to 10 μM.
References
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The Utility of Phosphonate Carbanions in Olefin Synthesis
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Olefin synthesis with organic phosphonate carbanions
John Boutagy,Richard W. Thomas +1 more
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A new and selective method of oxidation. the conversion of alkyl halides and alkyl tosylates to aldehydes
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Alkaloids of Piper longum Linn—I : Structure and synthesis of piperlongumine and piperlonguminine
Asima Chatterjee,C.P. Dutta +1 more
TL;DR: Piperlongumine and piperlonguminine are shown to be N-(3,4,5-trimethoxycinnamoyl)-Δ5-piperidin-2-one and isobutylamide of piperic acid respectively.