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
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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Book ChapterDOI
Unsaturated Amides from Piper Species (Piperaceae)
TL;DR: An extensive compilation of structures of unsaturated amide products from Piper species (Piperaceae) with relevant literature references, and including a few representative examples of related compounds from other families, is presented in this article.
Journal ArticleDOI
Studies on oxygen heterocycles part 2: Synthesis of 2-arylcoumaranones and 2-phenylbenzofuran
TL;DR: In this paper, the synthesis of 2-arylcoumaranones and 2-phenyllbenzofuran has been achieved in good yields under acid catalysed conditions from readily accessible and suitably substituted aryl α-diazo-arylmethyl ketones.
Journal ArticleDOI
Studies on enamides. Part-3 : A novel photochemical synthesis of 9-arylacridines☆
TL;DR: In this article, a unique synthesis of 9-arylacridines has been achieved by the photolysis of N-aroyldiphenylamines along with carbazole and photomigrated products.
Journal ArticleDOI
Amides, Isoquinoline Alkaloids and Dipeptides from the Aerial Parts of Piper mullesua
TL;DR: All isolates were evaluated for inhibitory activity against platelet aggregation induced by thrombin (IIa) or platelet-activating factor (PAF) and (-)-Mangochinine, pellitorine, and (2E,4E)-N-isobutyl-2,4-dodecadienamide showed weak inhibitoryActivity against rabbit platelet aggregating induced by PAF.
Journal ArticleDOI
New Amides and Phenylpropanoid Glucosides from the Fruits of Piper retrofractum
Rong Tang,Ya-qiong Zhang,Dong-Bao Hu,Xuefei Yang,Jun Yang,Myint Myint San,Thaung Naing Oo,Yi Kong,Yue-Hu Wang +8 more
TL;DR: Two new amides (E)-N-cinnamoyl-2-methoxypiperidine (1) and (R)-1-(2-oxopyrrolidin-3-yl)-5,6-dihydropyridins-2(1H)-one (2), four new amide glucosides, retrofractosides A–D (3–6), and two new phenylpropanoid glucoside,
References
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Journal ArticleDOI
The Utility of Phosphonate Carbanions in Olefin Synthesis
Journal ArticleDOI
Olefin synthesis with organic phosphonate carbanions
John Boutagy,Richard W. Thomas +1 more
Journal ArticleDOI
A new and selective method of oxidation. the conversion of alkyl halides and alkyl tosylates to aldehydes
Journal ArticleDOI
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.