Riyanto, Sugeng published an article in 2008, the title of the article was Spectral analysis of aegelin isolated from maja leaves (Aegle marmelos Corr.).Category: amides-buliding-blocks And the article contains the following content:
Aegelin is an alkaloid which isolated from Maja (Aegle marmelos Corr.) leaves. The mol. structure of the compound contains a chiral carbon atom. In our earlier publications the existence and influence of a chiral carbon atom have not been discussed yet. The existing of the chiral carbon atom gave rise two pair of doublets at 未 3.67 J=3.4 Hz and 未 3.43 J=8.5 Hz in the proton NMR spectrum. The doublets are signal of two proton which attached on adjacent atom of the chiral carbon atom which is confirmed by the two dimension NMR spectrum (HMQC). The two protons are magnetic unequivalent which cause their chem. shifts are different. The protons appear as two doublet with different J value because its couple to a proton attached at the chiral carbon atom and the spin-spin splitting is observed The existence of the two pairs of the doublets at 未 3.67 d,J=3.4 Hz and 未 3.42 d,J=8.5 Hz because the isolated aegelin from E. marmelos leaves contains of its enantiomer. The experimental process involved the reaction of N-(2-Hydroxy-2-(4-methoxyphenyl)ethyl)cinnamamide(cas: 456-12-2).Category: amides-buliding-blocks
The Article related to aegelin stereochem nmr maja leaf aegle marmelos, Plant Biochemistry: Composition and Products and other aspects.Category: amides-buliding-blocks
Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics