Abstract
Five alkaloids were isolated from the epigeal part of Oxytropis myriophylla. Three alkaloids were identified as N-benzoyl-β-phenylethylamine, N-trans-cinnamoyl-β-phenylethylamine, N-cis-cinnamoyl-β-phenylethylamine and the structures of two new alkaloids were elucidated to be N-benzoyl-β-hydroxyphenylethylarnine(2), N-trans-cinnamoyl-β-hydroxy-phenylethylamine(5). The absolu.te structures were established by modified Mosher method.
Highlights
The Oxytropis genus is one of the most wide spread genus of the family Fabaceae and 81 Oxytropis species are growing in Mongolia
Compound 2 showed a [M+H]' peak at m/' 242 corresponding to a molecular formula of CI5HISO2NT.he IR spectrum of 2 showed absorption bands for aromatic bond (1640 cm-I)
The epigeal parts of Oxytropis myriophylla (Pall) DC was collected in surrounding of Ulaanbaatar city, Mongolia, during the full flowering period at the end of July 1995
Summary
The Oxytropis genus is one of the most wide spread genus of the family Fabaceae and 81 Oxytropis species are growing in Mongolia The dried epigeal parts collected in Mongolia were extracted with EtOH. The 'H and '.'c NMR spectra of 2 revealed the presence of one benzoyl group which bound to p-hydroxyphenylethylamine,confirmed by the two mono-substituted benzen ring and an amidic CO (6, 170.6) and ahydroxymeh (6H4.90, 6, 73.6) coupled with methylene
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