This is by far the best book for well structure elucidation of natural products, "Organic Structure Analysis" by Crews, Rodriguez and Jaspar. The second edition came out in 2009. Has lots of worked examples throughout

http://www.amazon.co.uk/Organic-Structure-Analysis-Topics-Chemistry/dp/0195336046/ref=sr_1_fkmr0_1?ie=UTF8&qid=1434826865&sr=8-1-fkmr0&keywords=marcel+jaspars+structure+elucidation

I agree with Kebede, you can read recent specific journals in Natural Products. In addition if you have already spectroscopy data  (MS, NMR) of your compound/isolate, you can also compare/search in the on-line data base for predicting your compound(s). Maybe Metlin, Massbank or otther data base. Good luck!

Check this publication.

Dear Gunawan Indrayanto 

is there online data base for predicting  compound(s) from NMR spectrum either proton or carbon

thanks in advance

Dear Mohamed, I think there are many free data base  for NMR. You can search via Google; e.g. http://nmrshiftdb.nmr.uni-koeln.de/ ;  SDBS; http://nmrwiki.org/wiki/index.php?title=Database, etc

Best and easiest way you discuss your teacher. Good luck

If you have an idea about the class of compound (phytochemical) your isolated compound belongs to (through qualitative analysis), look for journals on structural elucidation of similar isolated compounds and you will get some information on spectra data for your isolated compound. The information will help you interpret your spectra.

If you don't want the expense of buying a textbook, two comprehensive review articles on this topic that I co-authored are listed below.

1) W.F. Reynolds and R. G. Enriquez, 'Choosing the Best Pulse Sequences, Acquisition Parameters, Post-acquisition Processing Strategies for Natural Product Structure Elucidation by NMR Spectroscopy', Journal of Natural Products, Vol. 65, 221-244 (2002).

2) R. C. Breton and W. F. Reynolds, 'Using NMR to Identify and Characterize Natural Products', Natural Product Reports,, Vol. 30, 501-524 (3013).

Also, Volume 100 of the series 'Progress in the Chemistry of Organic Natural Products' contains chapters on X-ray Crystallography, Mass Spectrometry, NmR spectroscopy and Vibrational Circular Dichroism as aids for naturalproduct structure elucidation.

If you have an idea about the class of compound through qualitative analysis and search in journals/lierature on structural elucidation of similar isolated compounds.........

I strongly want to recommend our book with 30 examples of natural products of high struzctural diversity and their full sets of spectra with interpretations:

S. Berger, D. Sicker, Classics in Spectroscopy - Isolation and structure elucidation of natural products

(2009) by WILEY-VCH, Weinheim, 600 pages, consult this page: http://eu.wiley.com/WileyCDA/WileyTitle/productCd-3527325166.html

hardcover: ISBN-13: 978-3-527-32617-4 139.00 Euro

softcover: ISBN-13: 978-3-527-32516-0  79.00 Euro.

This book has been awarded with the literature prize of the German Chemical Industry in 2009. It is a textbook, both for preparations and spectroscopic interpretations, additionally, you will find a huge amount iof background informations on the natural product, its origin, structure elucidation, application and the like as well as citations from belletristics and pictures.

I strongly recommend Dr. BOUAJILA Jalloul from the Faculty of Pharmacy in Toulouse. Check his extended work on natural products compounds analysis

For examples on both the isolation and the structural assignation of natural products of high diversity I want to recommend our series of papers in the journal

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