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5 results on '"Nupharamine"'

1. A Novel Approach to the Enantioselective Synthesis of Nuphar Alkaloids: First Total Synthesis of (−)-(5S,8R,9S)-5- (3-Furyl)-8-methyloctahydroindolizidine and Total Synthesis of (−)-Nupharamine

Author

José Barluenga, Cristina Ribas, Fernando Aznar, and Carlos Valdés

Subjects
chemistry.chemical_compound, biology, chemistry, Stereochemistry, Organic Chemistry, Enantioselective synthesis, Nuphar, Total synthesis, Nupharamine, biology.organism_classification
Published
1999
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2. Syntheses in the group of Nuphar alkaloids. III. Total synthesis of (±)-nupharamine and (±)-3-epinupharamine

Author

Andrzej Leniewski, J. Szychowski, and Jerzy T. Wróbel

Subjects
biology, Stereochemistry, Organic Chemistry, Total synthesis, Nupharamine, General Chemistry, biology.organism_classification, Catalysis, chemistry.chemical_compound, chemistry, Group (periodic table), Pyridine, Nuphar, Stereoselectivity
Abstract

The alkaloids (±)-nupharamine and (±)-3-epinupharamine were synthesized using 3-acetylfuran as the starting material. The conditions for stereoselective reduction of pyridine derivatives are described.

Published
1977
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3. The Synthesis ofN-Methylnupharamine

Author

Ichiro Kawasaki, Takeo Kaneko, and Shigeru Matsutani

Subjects
chemistry.chemical_compound, Alkaloids, biology, Chemistry, Stereochemistry, Spectrum Analysis, Alkaloid, Nuphar, Nupharamine, General Chemistry, Plants, biology.organism_classification
Abstract

Studying the synthesis of nupharamine, a minor alkaloid isolated from Nuphar japonicum DC, N-methylnupharamine was synthesized and its stereoisomers were characterized.

Published
1967
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4. On Alkaloids of Nuphar japonicum DC : Isolation of Nupharmine Methyl Ether and Nupharamine Ethyl Ether as Minor Alkaloids

Author

Munio Kotake, Shiro Kusumoto, Takeo Kaneko, Ichiro Kawasaki, and Shigeru Matutani

Subjects
chemistry.chemical_compound, biology, chemistry, Stereochemistry, Nuphar, Organic chemistry, Ether, Nupharamine, General Medicine, biology.organism_classification, Isolation (microbiology)
Abstract

川骨のアルカロイドとしては,ヌファリジン,デスオキシヌファリジン,およびヌファラミンが知られているが,副アルカロイドをさらにアルミナクロマトグラフィーによって分離したところ,ヌファラミンーメチルエーテル,およびエチルエーテルを単離することができた。

Published
1963
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5. Constituents of Rhizoma nupharis. XXII. Structure of Nuphamine

Author

Yoshio Arata and Tsutomu Ohashi

Subjects
Steric effects, Magnetic Resonance Spectroscopy, Chemical Phenomena, biology, Chemistry, Stereochemistry, Alkaloid, Nupharamine, Selective catalytic reduction, General Chemistry, General Medicine, biology.organism_classification, Medicinal chemistry, chemistry.chemical_compound, Alkaloids, Thionyl chloride, Drug Discovery, Nuphar
Abstract

A new alkaloid (I), C15H23O2N has been isolated from Nuphar japonicum DC. and named nuphamine. The compound (III) obtained by the catalytic reduction after the chlorination of I with thionyl chloride is completely in accordance with (-)-desoxynupharamine, derived from nupharamine (IX). By the catalytic reduction of I with palladium-carbon, dihydronuphamine (V), (-)-deoxynupharidine (VI-A) and allodeoxynupharidine (VI-B) were prepared. VI-A and VI-B were also prepared from V. Judging from these reactions and the nuclear magnetic resonance spectra, the structure of I has been determined to be presented by the fromula VIII. The steric chemical correlations among the alkaloids, (-)-desoxynupharidine (VI-A), (-)-nuphamine (VIII) and (-)-nupharamine (IX) isolated from Nuphar iaponicum have been also achieved.

Published
1965
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