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4 results on '"Ikram M. Said"'

1. ChemInform Abstract: New Indole Alkaloids from the Leaves of Malaysian Mitragyna speciosa

Author

Hiromitsu Takayama, Norio Aimi, Mika Kurihara, Mariko Kitajima, and Ikram M. Said

Subjects
Indole test, Monoterpenoid Indole Alkaloids, Traditional medicine, biology, Chemistry, Mitragyna speciosa, General Medicine, biology.organism_classification
Abstract

Three new monoterpenoid indole alkaloids, i.e., 3,4,5,6-tetradehydromitragynine, mitralactonal, and mitrasulgynine carrying a sulfonate function, were isolated, together with seven known compounds, from the leaves of Mitragyna speciosa native to Malaysia.

Published
2010

4. ChemInform Abstract: Structure Revision of Mitragynaline, an Indole Alkaloid in Mitragyna speciosa

Author

Norio Aimi, Shin-ichiro Sakai, Peter J. Houghton, Hiroko Seki, Mariko Kitajima, Ikram M. Said, Hayato Ishikawa, Kentaro Yamaguchi, Mika Kurihara, and Hiromitsu Takayama

Subjects
NMR spectra database, Chemical transformation, chemistry.chemical_compound, Indole alkaloid, biology, Chemistry, Stereochemistry, Mitragynine, Mitragyna speciosa, Alkaloid, General Medicine, biology.organism_classification
Abstract

The structure of mitragynaline, an indole alkaloid isolated from Malaysian Mitragyna speciosa, was revised as formula 3 by analysis of the NMR spectra measured at low temperature and by chemical transformation with DDQ oxidation from the known alkaloid mitragynine ( 5 ).

Published
2010

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