Journal ArticleDOI
Amides from Piper brachystachyum and Piper retrofractum.
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TLDR
Three unsaturated amides, designatedBrachystamides-C, D and E have been characterised from Piper brachystachyum Wall, which yielded retrofractamide-D, which has been fully characterised.About:
This article is published in Phytochemistry.The article was published on 2002-04-01. It has received 22 citations till now. The article focuses on the topics: Piper retrofractum.read more
Citations
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BookDOI
Piper: A Model Genus for Studies of Phytochemistry, Ecology, and Evolution
Lee A. Dyer,Aparna D. N. Palmer +1 more
Book ChapterDOI
Isolation, Synthesis, and Evolutionary Ecology of Piper Amides
TL;DR: The phytochemistry of the genus Piper is rich in terms of numbers of compounds discovered, but given the diversity of this genus and the intraspecific diversity of secondary metabolites in those species that have been examined, Piper chemistry has not been adequately investigated.
Journal ArticleDOI
Alkaloids from Piper sarmentosum and Piper nigrum
Gwendoline Cheng Lian Ee,Chyi Meei Lim,Chan Kiang Lim,Mawardi Rahmani,Khozirah Shaari,Choon Fah Joseph Bong +5 more
TL;DR: Detailed chemical studies on the roots of Piper sarmentosum and Piper nigrum have resulted in several alkaloids, including a new aromatic compound, 1-nitrosoimino-2,4,5-trimethoxybenzene (1).
Journal ArticleDOI
Purification of amide alkaloids from Piper longum L. using preparative two-dimensional normal-phase liquid chromatography × reversed-phase liquid chromatography
TL;DR: The results demonstrate that this 2D NPLC × RPLC method with good orthogonality was effective for the preparative separation and purification of amide alkaloids from Piper longum L.
Journal ArticleDOI
Bioactive Secondary Metabolites from Plant Sources: Types, Synthesis, and Their Therapeutic Uses
TL;DR: In this review, the various aspects of secondary metabolites, production synthesis, and sources of medical products from plant sources are discussed.
References
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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
TL;DR: 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.
Journal ArticleDOI
Two amides from Piper brachystachyum
Avijit Banerji,Chittaranjan Das +1 more
TL;DR: Two new unsaturated amides were isolated from the total above-ground parts of Piper brachystachyum and were shown to be N-isobutyl-15 (3′,4′-methylenedioxyphenyl) 2E,4E-pentadecadienamide from spectroscopic and chemical investigations.
Journal ArticleDOI
Isobutylamides from Piper ridleyi
TL;DR: Extraction of the stems and leaves of Piper ridleyi with ether afforded N - iso butyl-15-(3′,4′-methylenedioxyphenyl)-2 E,4 E,12 E -pentadecatrienamide (ridleyamide), as well as the known amide, retrofractamide, and sterols was described in this paper.
Journal ArticleDOI
Carbon‐13 NMR spectra of Piper alkamides and related compounds
TL;DR: In this article, the authors complete the composition and composes apparentes d'apres les schemas de decomposition des spectres couples, de l'application des relations d'additivite and des comparaisons internes des deplacements chimiques.